NI-Serial 4.1 Driver Win32/64Eng 美国国家仪器串口产品驱动NISerial410

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Windows系统下（Linux和MAC系统下请自行了解清楚）NI的各种软件、模块、工具包、驱动程序，使用NI许可证管理器来激活的，绝大部分的都可以使用NI Lincense Activator来激活：NI序列号Serial Number生成激活工具NI License Activator，LabVIEW/VBAI/VDM/VAS等软件模块工具包破解工具不限版本http://visionbbs.com/thread-490-1-1.html

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NI-Serial 4.1 Driver Win32/64Eng 美国国家仪器串口产品驱动NISerial410

NI-Serial为使用NI串口产品的客户提供支持。
NI-Serial驱动程序可最大限度提高CPU的利用率，无需改变波特率即可提高仪器的数据吞吐量。您也可使用较大型的先入先出存内存缓冲器(FIFO)来执行DMA传输，使NI-Serial接口以更高的速率发送和接收更大量的数据。

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NI官方下载地址（可能无法下载完成或地址无效）：
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NI-Serial for Windows, Version 4.1

Thank you for using NI-Serial for Windows, Version 4.1.

This file contains release notes, patent information, and last-minute information for the NI-Serial for Windows software. Some information in this file may be too recent to be included in the official documentation set.

This readme contains the following main sections:

• Release Notes
• Product Security and Critical Updates
• Changes and Fixed Issues
• Supported Operating Systems
• Supported Interfaces
• How to Use NI Software with Microsoft Windows 8
• Legal Information
  

Release Notes

---

Product Security and Critical Updates

Visit ni.com/security to view and subscribe to receive security notifications about National Instruments products. Visit ni.com/critical-updates for information about critical updates from National Instruments.

New Firmware for USB and ExpressCard™ Hardware

NI-Serial 3.5.1 included new firmware for USB and ExpressCard serial interfaces. If you are upgrading from a version older than NI-Serial 3.5.1, disconnect and reconnect your USB and ExpressCard devices to update to the latest firmware after finishing the NI-Serial installation process. In the case of the USB-485/4 hardware, also disconnect and reconnect the power cable.

Port Enumeration Order on Windows 7 and later

Serial ports on Windows 7 and later may not enumerate in numerical order. For more information, go to ni.com/kb and search for KnowledgeBase 51RBTPG2.

Upgrading from earlier versions of Windows

Microsoft often supports upgrading to newer versions of Windows, without a complete system reinstall. This can cause an improper version of NI-Serial to be installed on the system, which does not properly support the upgraded operating system. You should uninstall NI-Serial prior to upgrading Windows, then download and install the appropriate version of NI-Serial for your new version of Windows.

If you have already upgraded Windows, without first uninstalling NI-Serial, it may be necessary to repair your NI-Serial installation. If the installed version does not support your operating system, you should then uninstall it and install the proper version.

Incorrect Serial Number Displayed in Measurement & Automation Explorer and the Device Manager

If you swap one PCI-based (PCI, PCIe, PXI, and PXIe) serial card for another of the same model, the serial number shown in Measurement & Automation Explorer and the Device Manager may not change. This happens because Windows cannot distinguish the old hardware from the new. To fix this problem, uninstall the interface through Device Manager, then scan for new hardware or restart your computer. This forces Windows to reinstall your hardware and the correct serial number will be displayed.

CreateFile COM Name Issue

The CreateFile function from the Microsoft Win32 API fails for port names COM10 and greater. To use these ports, and for the function to succeed, append the string "\\\\.\\" before the port name. For example, to open COM10, use the string "\\\\.\\COM10" for the port name. This is because the port's full name is actually \\.\COM10, and all "\" characters must be doubled per the C language syntax.

Windows Server 2003 R2

Support for Windows Server 2003 R2 may require disabling physical address extensions (PAE). To learn how this might affect your use of Windows Server 2003 and what actions you might have to take, visit ni.com/info and enter the info code PAESupport.

Automating the Installation of NI Products

You can automate the installation of most NI products using command-line arguments to suppress some or all of the installer user interface and dialog boxes. However, starting with the August 2012 releases (products using NI Installers version 3.1 or later), you may need to perform additional steps before or during a silent installation of NI software.

If the NI product you are installing uses Microsoft .NET 4.0, the .NET installer may run before any NI software installs and may require a reboot before the installation of NI software begins. To avoid a .NET reboot, install .NET 4.0 separately before you install NI software.

For more information, refer to the following KnowledgeBase articles:

• For more information on silent installations of individual NI products, refer to KB 4CJDP38M, Automating the Installation of a Single Installer.
• For more information on silent installations of suited NI products, such as NI Developer Suite, refer to KB 4GGGDQH0, Automating the Installation of a Suited Installer.
• To determine what version of NI Installers your product contains, refer to KB 4CJDR18M, How Can I Determine the Type and Version of My National Instruments Installer? .
  

Changes and Fixed Issues

---

• Version 4.1
• Version 4.0
• Version 3.9.1
• Version 3.9
• Version 3.8.1
• Version 3.8
• Version 3.7
• Version 3.6
• Version 3.5.1
• Version 3.5
• Version 3.4
• Version 3.3
• Version 3.2
• Version 3.1
• Version 3.0
• Version 1.8
  

Changes and Fixed Issues in Version 4.1

NI-Serial 4.1 adds new hardware support and fixes for LabVIEW Real-Time. Refer to the NI-Serial for LabVIEW Real-Time Readme for more information.

Changes and Fixed Issues in Version 4.0Improved Support for NI System Configuration API

NI-Serial 4.0 adds the discovery of USB and ENET hardware through the NI System Configuration API.

NI System Configuration Expert Name Change

The NI System Configuration expert for NI-Serial has been renamed from "ni-serial" to "serial". This change allows for system configuration and MAX import/export operations to be accessed in a consistent manner. Existing applications using the old name will need to be updated.

Improved Appearance in MAX

NI-Serial 4.0 improves the way serial hardware is displayed in MAX. PXI and PXIe hardware are now displayed under their respective chassis in the tree, and ENET interfaces are now found under Network Devices. The port items which were previously shown in MAX have been removed, and VISA ASRL resources are now placed directly beneath the serial interface.

Removal of NI-Serial Communicator

NI-Serial Communicator has been obsoleted, and is no longer installed. Similar functionality can be found using NI-VISA Interactive Control, which can be opened by selecting a VISA ASRL resource in MAX, and clicking the Open VISA Test Panel button in the toolbar.

Changes and Fixed Issues in Version 3.9.1Update shortcuts installed on Windows 8

When installing on Windows 8, NI-Serial no longer pins shortcuts to the Start screen. Shortcuts which are available from the start menu on earlier versions of Windows may be accessed through the NI Launcher utility, or by searching from the Start screen.

383662: Configuring ENET serial port to COM256 causes crash

NI-Serial 3.9.1 resolves an issue where a system crash could occur after renaming an ENET-232 or ENET-485 serial port to COM256. This crash could occur either when opening the port, or immediately upon booting Windows.

Changes and Fixed Issues in Version 3.9Adds support for Windows 8

NI-Serial 3.9 adds support for Windows 8. Known issues exist regarding the accessibility of items which were previously accessible via the Windows Start Menu. This will be addressed in a future release of NI-Serial.

Support for NI System Configuration API

NI-Serial 3.9 supports the discovery of PCI-based (PCI, PCIe, PXI, and PXIe) hardware through the NI System Configuration API.

325477: Possible system crash after removing hardware during hibernation

NI-Serial 3.9 resolves an issue where a system could crash after removing PCI-based hardware from a hibernated system. Depending on the system configuration, the crash could occur immediately upon resume, or at a later time.

317971: Cannot use baud rates higher than 131072 from .NET and possibly other applications

NI-Serial 3.9 resolves an issue which limited the usable baud rate from the .NET SerialPort interface to 131072 baud. This error occurred because NI-Serial improperly reported the maximum baud rate as BAUD_128K (The maximum constant supported by the API) when the port actually supported higher baud rates. This has been changed to report BAUD_USER, indicating that custom baud rates are supported. Other applications querying the maximum baud rate may have been impacted as well.

Changes and Fixed Issues in Version 3.8.1305387: DRIVER_IRQL_NOT_LESS_OR_EQUAL caused by NI-Serial ENET driver

NI-Serial 3.8.1 has resolved issues which occasionally resulted in DRIVER_IRQL_NOT_LESS_OR_EQUAL system crashes when using ENET-232 or ENET-485 ports.

299891: IRQL_GT_ZERO_AT_SYSTEM_SERVICE caused by NI-Serial ENET driver

NI-Serial 3.8.1 has resolved an issue which could result in a IRQL_GT_ZERO_AT_SYSTEM_SERVICE system crash when closing an ENET-232 or ENET-485 port.

Changes and Fixed Issues in Version 3.8Added support for cRIO-908x Controllers

NI-Serial 3.8 adds support for the RS-485 port of the cRIO-908x controllers running Windows.

NI-Spy replaced by NI I/O Trace

NI-Spy has been replaced by NI I/O Trace. All functionality previously found in NI-Spy is now found in NI I/O Trace.

Changes impacting PCI, PCI Express, PXI, and PXI Express hardware:

• Performance Optimizations for Small Transfers
  Several enhancements have been made to improve performance and decrease CPU overhead when performing small writes on all interfaces, and small reads on 843x series hardware.
• ID 288089: Flow control may not disengage
  When using multiple forms of flow control simultaneously on a single port, it was possible for flow control to fail to disengage, preventing data transmission. This has been fixed.
• ID 287461: Possible loss of data preceding serial error
  Several bytes of valid data could be discarded immediately prior to the reception of a serial error, such as a parity or overrun error. This valid data is now properly received prior to handling the error condition.
• ID 219314: Incorrect timeout behavior
  The special case where the Timeout Byte Interval and Timeout Multiplier are both -1 was handled incorrectly, resulting in serial calls failing to time out. This was most easily seen when using NI-Serial from .NET applications. This issue has been fixed.
  
  

Changes and Fixed Issues in Version 3.7

NI-Serial 3.7 adds new hardware support for LabVIEW Real-Time. Refer to the NI-Serial for LabVIEW Real-Time readme for more information.

Changes and Fixed Issues in Version 3.6Windows Server 2003 R2 (32-bit) and Windows Server 2008 R2 Support

NI-Serial 3.6 adds support for Windows Server 2003 R2 (32-bit) and Windows Server 2008 R2. Note that only the R2 versions are supported. Refer to Supported Interfaces for a list of supported hardware.

Add support for PXI Express serial hardware

NI-Serial 3.6 adds support for National Instruments PXI Express serial interfaces. Refer to Supported Interfaces for detailed model information.

PXIe-8431 hardware adds support for higher baud rates

For some applications, it may be possible to use a PXIe-8431 interface for communicating at up to 10 MBaud. For more information go to ni.com/kb and search for 58KEI82F.

ID 201827: Incorrect RS-485 wire mode setting could be used when opening port

Changing the RS-485 wire mode for PCI, PXI, and PCIe devices in Measurement & Automation Explorer and Device Manager had no effect. This has been fixed.

Windows 2000

Support for Windows 2000 is discontinued in this release.

Changes and Fixed Issues in Version 3.5.1Windows 7 Support

NI-Serial 3.5.1 adds support for Windows 7. Refer to Supported Interfaces for a list of supported hardware.

Add support for PCI Express serial hardware

NI-Serial 3.5.1 adds support for National Instruments PCI Express serial interfaces. Refer to Supported Interfaces for detailed model information.

PCMCIA-232 and PCMCIA-485

Support for PCMCIA-232 and PCMCIA-485 interfaces is discontinued in this release.

ID 34931: Timeouts when reading from ENET Serial ports

On some systems, every read attempt from an ENET Serial port would result in a timeout. This has been fixed.

ID 167613: Incorrect RS-485 wire mode setting could be used when opening a port

Changing the RS-485 wire mode for PCI, PXI, and PCIe devices in Measurement & Automation Explorer and the Device Manager had no effect on the port until the system was rebooted. This has been fixed.

ID 163281: Baud rates for PCIe ports cannot be set to a non-standard baud rate

It was not possible to set a PCIe serial port to a non-standard baud rate in Measurement & Automation Explorer and the Device Manager when using NI-Serial 3.5.0. This has been fixed.

ID 189256: Renumbered COM ports not available until after reboot

Renumbered COM ports could not be used until after a reboot on systems with Microsoft User Account Control (UAC) enabled. This has been fixed. Renumbering ports on an ENET interface will continue to require a reboot.

Changes and Fixed Issues in Version 3.5Added support for PCI Express serial hardware

NI-Serial 3.5 adds support for National Instrument PCI Express serial interfaces. Refer to the chart of Supported Interfaces for detailed model information.

On-Chip Flow Control

NI-Serial 3.5 adds support for on-chip flow control. Previous driver versions implemented flow control in the driver, which in some circumstances could allow data loss. All PCI, PXI, and PCI Express interfaces now utilize on-chip RTS/CTS and XON/XOFF flow control. 8430-series hardware also supports on-chip DTR/DSR flow control.

ID 139396: Windows Direct Cable Connection

Previous versions of NI-Serial could cause a system hang when initiating a Windows Direct Cable Connection. This issue has been resolved for PCI, PXI, and PCI Express interfaces. Issues may still exist when using Windows Direct Cable Connection with other interface types.

Serial IOCTL AvailabilityNI-Serial no longer supports the following seldom-used Device I/O Control Codes:

• IOCTL_SERIAL_SET_MODEM_CONTROL
• IOCTL_SERIAL_GET_MODEM_CONTROL
• IOCTL_SERIAL_SET_FIFO_CONTROL
• IOCTL_SERIAL_XOFF_COUNTER
• IOCTL_SERIAL_LSRMST_INSERT
• IOCTL_SERIAL_GET_STATS
• IOCTL_SERIAL_CLEAR_STATS
  

Windows Management Instrumentation

NI-Serial for Windows no longer provides support for Microsoft Windows Management Instrumentation.

Changes and Fixed Issues in Version 3.4USB and ExpressCard Hardware

NI-Serial 3.4 introduces improved functionality and performance for USB-232, USB-485, and NI ExpressCard-842x interfaces. This release also introduces support for all USB and ExpressCard interfaces on 64-bit Windows Vista.

Measurement & Automation Explorer Fixed IssuesThe following issues for the Measurement & Automation Explorer (MAX) interface for serial devices have been fixed:

• ID 56439—Users could not save changes for more than 9 ports using Save All Ports in MAX.
• ID 56514—Under some circumstances, the serial port advanced tab did not appear in MAX.
• ID 57115—Recover Unused COM Ports did not take effect until MAX was restarted.
  

Windows 64-bit XP and Windows Server 2003

Support for Windows 64-bit XP and Windows Server 2003 is discontinued in this release.

Changes in Version 3.3

NI-Serial 3.3 adds new hardware support for LabVIEW Real-Time. Refer to the NI-Serial for LabVIEW Real-Time readme for more information.

Changes in Version 3.2Add Support for Windows Vista

NI-Serial 3.2 adds support for Windows Vista. Refer to Supported Interfaces for a list of supported hardware.

ISA-232 and ISA-485

Support for the obsolete ISA-232 and ISA-485 interfaces is discontinued in this release.

Changes in Version 3.1

NI-Serial 3.1 adds new hardware support for LabVIEW Real-Time. Refer to the NI-Serial for LabVIEW Real-Time readme for more information.

Changes in Version 3.0

NI-Serial 3.0 adds new hardware support for LabVIEW Real-Time. Refer to the NI-Serial for LabVIEW Real-Time readme for more information.

Changes in Version 1.8Windows XP x64 and Windows Server 2003 x64

NI-Serial 1.8 adds support for Microsoft Windows XP x64 and Windows Server 2003 x64 for all PCI, PXI, and PCMCIA interfaces.

Baud Rates up to 3 Megabaud

NI-Serial 1.8 adds support for custom baud rates up to 3 Mbaud on PCI/PXI-8431/8433 hardware. The two-wire auto control mode for RS-485 transceiver control has a maximum baud rate of 2 Mbaud.

Communication Utility

NI-Serial 1.8 includes a new serial communication utility. You can use the Serial Communicator to test serial hardware configuration and communication. The Serial Communicator is available in Measurement & Automation Explorer.

Deprecated Serial I/O RequestsThe following Serial I/O requests were deprecated in NI-Serial 1.8:

• Device I/O Control Request: SERIAL_IOCTL_SET_TRANSCEIVER_MODE
• Major I/O Request: IRP_MJ_INTERNAL_DEVICE_CONTROL
  

Supported Operating Systems

---

• Windows 8.1
• Windows Server 2012 R2
• Windows 7
• Windows Server 2008 R2
• Windows Vista
• Windows XP (32-bit)
• Windows Server 2003 R2 (32-bit)
  

Note: ENET interfaces are not supported by NI-Serial on 64-bit versions of Windows, but may be used directly through NI-VISA. Please refer to the NI-VISA Help for more information.

To download previous versions of NI-Serial drivers, refer to ni.com/updates and search for NI-Serial.

Supported Interfaces

---

• PCI
• PCI Express
• PXI
• PXI Express
• USB
• ENET
• ExpressCard
• Controllers
  

PCI Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
PCI-8430/2	RS-232	2	No	1000.0
PCI-8430/4	RS-232	4	No	1000.0
PCI-8430/8	RS-232	8	No	1000.0
PCI-8430/16	RS-232	16	No	1000.0
PCI-8431/2	RS-485/RS-422	2	No	3000.01
PCI-8431/4	RS-485/RS-422	4	No	3000.01
PCI-8431/8	RS-485/RS-422	8	No	3000.01
PCI-8432/2	RS-232	2	Yes	1000.0
PCI-8432/4	RS-232	4	Yes	1000.0
PCI-8433/2	RS-485/RS-422	2	Yes	3000.01
PCI-8433/4	RS-485/RS-422	4	Yes	3000.01
PCI-232/2	RS-232	2	No	115.2
PCI-232/4	RS-232	4	No	115.2
PCI-232/8	RS-232	8	No	115.2
PCI-232/16	RS-232	16	No	115.2
PCI-485/2	RS-485/RS-422	2	No	460.8
PCI-485/4	RS-485/RS-422	4	No	460.8
PCI-485/8	RS-485/RS-422	8	No	460.8
PCI-232I/2	RS-232	2	Yes	115.2
PCI-232I/4	RS-232	4	Yes	115.2
PCI-485I/2	RS-485/RS-422	2	Yes	460.8
PCI-485I/4	RS-485/RS-422	4	Yes	460.8
PCI Express Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
NI PCIe-8430/8	RS-232	8	No	1000.0
NI PCIe-8430/16	RS-232	16	No	1000.0
NI PCIe-8431/8	RS-485/RS-422	8	No	3000.01
NI PCIe-8431/16	RS-485/RS-422	16	No	3000.01
PXI Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
PXI-8430/2	RS-232	2	No	1000.0
PXI-8430/4	RS-232	4	No	1000.0
PXI-8430/8	RS-232	8	No	1000.0
PXI-8430/16	RS-232	16	No	1000.0
PXI-8431/2	RS-485/RS-422	2	No	3000.01
PXI-8431/4	RS-485/RS-422	4	No	3000.01
PXI-8431/8	RS-485/RS-422	8	No	3000.01
PXI-8432/2	RS-232	2	Yes	1000.0
PXI-8432/4	RS-232	4	Yes	1000.0
PXI-8433/2	RS-485/RS-422	2	Yes	3000.01
PXI-8433/4	RS-485/RS-422	4	Yes	3000.01
PXI-8420/2	RS-232	2	No	115.2
PXI-8420/4	RS-232	4	No	115.2
PXI-8420/8	RS-232	8	No	115.2
PXI-8420/16	RS-232	16	No	115.2
PXI-8421/2	RS-485/RS-422	2	No	460.8
PXI-8421/4	RS-485/RS-422	4	No	460.8
PXI-8421/8	RS-485/RS-422	8	No	460.8
PXI-8422/2	RS-232	2	Yes	115.2
PXI-8422/4	RS-232	4	Yes	115.2
PXI-8423/2	RS-485/RS-422	2	Yes	460.8
PXI-8423/4	RS-485/RS-422	4	Yes	460.8
PXI Express Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
NI PXIe-8430/8	RS-232	8	No	1000.0
NI PXIe-8430/16	RS-232	16	No	1000.0
NI PXIe-8431/8	RS-485/RS-422	8	No	3000.01, 2
NI PXIe-8431/16	RS-485/RS-422	16	No	3000.01, 2
USB Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
USB-232	RS-232	1	No	230.4
USB-232/2	RS-232	2	No	230.4
USB-232/4	RS-232	4	No	230.4
USB-485	RS-485/RS-422	1	No	460.8
USB-485/2	RS-485/RS-422	2	No	460.8
USB-485/4	RS-485/RS-422	4	No	460.8
ENET Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
ENET-232/2	RS-232	2	No	230.4
ENET-232/4	RS-232	4	No	230.4
ENET-485/2	RS-485/RS-422	2	No	460.8
ENET-485/4	RS-485/RS-422	4	No	460.8
ExpressCard Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
NI ExpressCard-8420/2	RS-232	2	No	230.4
NI ExpressCard-8421/2	RS-485/RS-422	2	No	460.8
Controllers	# RS-485/422 Ports	Isolated	Max Baud (kbaud)
NI-Serial software is required to use the RS-485/422 ports on the following controllers. The RS-232 ports are supported by Microsoft's serial driver and do not require NI-Serial to be installed.
cDAQ-913x	13	Yes	230.4
cRIO-908x	13	Yes	230.4

1. The two-wire auto control mode for RS-485 transceiver control has a maximum baud rate of 2 Mbaud.

2. For possible use with higher baud rates, refer to ni.com/kb and search for KnowledgeBase 58KEI82F.

3. This port supplies connections only for transmit, receive, and ground.

How to Use NI Software with Microsoft Windows 8

---

When you install National Instruments software on Microsoft Windows 8 and 8.1, you will notice a few additional tiles on the Start screen, including shortcuts to NI application software products such as NI LabVIEW, Measurement & Automation Explorer (MAX), and the new NI Launcher.

Using NI Launcher

NI Launcher helps you find and launch installed NI products. It provides you with a method of finding NI products similar to the Start menu in previous versions of Microsoft Windows. To use NI Launcher, click the NI Launcher tile on the Start screen. NI Launcher launches the desktop and opens a menu containing a list of NI products. Click any NI product to launch it.

Note  MAX does not appear as a desktop shortcut when installed on Microsoft Windows 8. You can launch MAX either from the Start screen or from within NI Launcher.

Pinning Frequently Used Applications

For convenience, you can pin your most-used NI applications, such as MAX, to either the Start screen or the Taskbar on the desktop, as necessary:

Current Application	Icon Location	Pin to Action
Windows 8 Desktop	Desktop Taskbar	Right-click application and select Pin to Taskbar
Windows 8 Desktop	Start screen	Right-click application and select Pin to Start
Windows 8 Start screen	Desktop Taskbar	Right-click application and select Pin to taskbar from the menu bar on the bottom of the screen

Finding All Programs

If you want to find a particular application or related files, such as documentation files, from the Start screen, you can access all installed files by right-clicking anywhere on the Start screen and selecting All apps. A list of all installed software and related files appears, in alphabetical order by creator or type.

For more information about NI support for Windows 8, visit ni.com/windows8.

NI-Serial Drops Support for Microsoft Windows Vista, Windows XP, and Windows Server 2003 in 2016

---

NI-Serial will drop support for Microsoft Windows Vista, Windows XP, and Windows Server 2003 as of July 1, 2016. Versions of NI-Serial that ship after July 1, 2016 will not install or run on Windows Vista, Windows XP, or Windows Server 2003. For detailed information about NI application software product life cycles, visit ni.com/info and enter one of the following Info Codes:

Product	Info Code
NI LabVIEW	lifecycle
NI LabWindows™/CVI™	cvi_lifecycle
NI Measurement Studio	mstudiolifecycle
NI TestStand	tslcp
NI DIAdem	ddlcp
NI SignalExpress	selcp
NI VeriStand	nivslifecycle

Legal Information

---

Copyright

© 1996–2014 National Instruments. All rights reserved.

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.

National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.

End-User License Agreements and Third-Party Legal Notices

You can find end-user license agreements (EULAs) and third-party legal notices in the following locations after installation:

• Notices are located in the \_Legal Information and directories.
• EULAs are located in the \Shared\MDF\Legal\license directory.
• Review \_Legal Information.txt for information on including legal information in installers built with NI products.
  

Trademarks

Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for information on National Instruments trademarks.

The ExpressCard™ word mark and logos are owned by PCMCIA and any use of such marks by National Instruments is under license.

Other product and company names mentioned herein are trademarks or trade names of their respective companies.

Patents

For patents covering the National Instruments products/technology, refer to the appropriate location: Help» Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents.

NI-Serial for LabVIEW Real-Time, Version 4.1

Thank you for using NI-Serial for LabVIEW Real-Time, Version 4.1.

This file contains release notes, patent information, and last-minute information for the NI-Serial for LabVIEW Real-Time software. Some information in this file may be too recent to be included in the official documentation set.

This readme contains the following main sections:

• Release Notes
• Product Security and Critical Updates
• Known Issues
• Changes and Fixed Issues
• Supported Versions of LabVIEW Real-Time
• Supported Interfaces
• Legal Information
  

Release Notes

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Product Security and Critical Updates

Visit ni.com/security to view and subscribe to receive security notifications about National Instruments products. Visit ni.com/critical-updates for information about critical updates from National Instruments.

Known Issues

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ID

Known Issue

445885

When running NI Linux Real-time OS, NI-Serial incorrectly causes NI-VISA to detect RS-232 ports on NI 9870 modules as RS-485 configured for 4-wire mode. The side effects of this are: Ports are reported as RS-485 4-wire mode by VISA. Status of the DSR, DCD, and RI lines are always reported as unknown. VISA events for DSR, DCD, and RI lines do not function correctly. This issue will be resolved in a future NI-Serial release.

Changes and Fixed Issues

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• Version 4.1
• Version 4.0
• Version 3.9.1
• Version 3.9
• Version 3.8.2
• Version 3.8.1
• Version 3.8
• Version 3.7.1
• Version 3.7
• Version 3.6
• Version 3.5.2
• Version 3.3.4
• Version 3.3.3
• Version 3.3.2
• Version 3.3
• Version 3.2
• Version 3.1
• Version 3.0
  

Changes and Fixed Issues in Version 4.1Added support for NI 9870 and NI 9871 C series modules on the cRIO-9068.

NI-Serial 4.1 adds serial module (NI 9870 and NI 9871) support for the cRIO-9068 controller. Refer to the Known Issues section for known issues with NI-VISA incorrectly reporting NI 9870 ports as RS-485 and incorrect modem line behaviors.

356028: NI 9870 and NI 9871 C series modules do not detect errors in all cases.

NI-Serial 4.1 fixes an issue where some parity and framing errors received by NI 9870 and NI 9871 modules are not detected by the firmware. This can result in the driver not reporting the errors, leading to data corruption.

Changes and Fixed Issues in Version 4.0Added support for NI CVS-1457RT Smart CameraImproved Support for NI System Configuration API

NI-Serial 4.0 adds the discovery of NI 9870 and NI 9871 modules through the NI System Configuration API.

NI System Configuration Expert Name Change

The NI System Configuration expert for NI-Serial has been renamed from "ni-serial" to "serial." This change allows for system configuration and MAX import/export operations to be accessed in a consistent manner. Existing applications using the old name will need to be updated.

387524: Incorrect Slot and Chassis Identification

When using the NI System Configuration API to query information about NI-Serial PCI or PCIe hardware in a Desktop RT system, it would incorrectly specify that the board was in slot 255 of chassis PXI255. This has been resolved, and now reports that the chassis and slot are unavailable.

Improved Appearance in MAX

NI-Serial 4.0 improves the way serial hardware is displayed in MAX. PXI and PXIe hardware are now displayed under their respective chassis in the tree. NI 9870 and NI 9871 modules will also now appear in MAX when configured for use with NI-Serial.

When using a host system with NI-Serial 4.0 installed to view LabVIEW Real-Time controllers running older versions of NI-Serial, the NI-Serial boards will no longer appear in MAX. All ports will still be accessible as VISA ASRL resources.

Changes and Fixed Issues in Version 3.9.1Update shortcuts installed on Windows 8

When installing on Windows 8, NI-Serial no longer pins shortcuts to the Start screen. Shortcuts which are available from the start menu on earlier versions of Windows may be accessed through the NI Launcher utility, or by searching from the Start screen.

Changes and Fixed Issues in Version 3.9Added support for updated Smart CamerasSupport for NI System Configuration API

NI-Serial 3.9 supports the discovery of PCI-based (PCI, PCIe, PXI, and PXIe) hardware through the NI System Configuration API.

359904: System Instability every 49.7 days

NI-Serial 3.9 fixes an issue where various errors could be manifested if a serial transfer is in progress when the 32-bit system tick count rolls over, which happens once every 49.7 days. Symptoms included failed serial transfers, FIFO overruns, failure of serial transfers to timeout, and system hangs.

Changes and Fixed Issues in Version 3.8.2ID 347232: System could hang during reboot

A system could hang during reboot if it was transmitting data from a 843x series serial port when the reboot command was sent. This has been fixed.

ID 337167: Possible crash with cRIO-9075, cRIO-9076, sbRIO-9605, or sbRIO-9606 controllers

A system crash or instability could occur when detecting serial ports on any of the mentioned controllers. Some examples when this could occur are expanding Devices & Interfaces in Measurement & Automation Explorer, installing VISA Server on the target, or attempting to use a serial port. This has been fixed.

ID 328853: Serial ports not functioning on cFP-2100 and cFP-2110 controllers

The serial ports on cFP-2100 and cFP-2110 controllers were not properly detected. This did not impact cFP-2120 controllers. This has been fixed.

Changes and Fixed Issues in Version 3.8.1Support for New Controllers

NI-Serial 3.8.1 adds support for serial ports on RIO Mezzanine Cards.

SecondaryInterrupts option in niserial.dbs has been replaced

The SecondaryInterrupts option used in the niserial.dbs file has been replaced, and will no longer function. Refer to the Performance on LabVIEW Real-Time topic in the NI-Serial Help for more information.

ID 132892: Incorrect behavior when using NI-VISA VI_EVENT_ASRL_RI event

When using the VI_EVENT_ASRL_RI event with some cRIO, sbRIO, and cFP controllers, the event was incorrectly signaled on both rising and falling edges of the RI line. This behavior has now been fixed, and the event is signaled only on the falling edge.

Changes and Fixed Issues in Version 3.8Performance Optimizations for Small Transfers

Several enhancements have been made to improve performance and decrease CPU overhead when performing small writes on all interfaces, and small reads on NI 843x series hardware.

Support for New Controllers

NI-Serial 3.8 adds support for additional cRIO, sbRIO, and Smart Camera controllers.

Port numbering change for some systems

NI-Serial now reserves port numbers for two built-in serial ports on all PXI, Industrial Controller, Desktop RT, and cRIO-908x controllers. On these systems, PnP hardware will now be assigned port numbers starting with COM3, when they may have previously been assigned COM2.

NI-Serial settings no longer persist after uninstall

The niserial.dbs file is replaced each time NI-Serial is uninstalled or reinstalled. This has the effect that any customized settings will be removed. This matches the behavior of NI-Serial 3.6 and earlier.

Removed support for FP-20xx and cFP-20xx controllers.

NI-Serial for LabVIEW Real-Time, Version 3.8, requires LabVIEW Real-Time 8.6 or later. It is not possible to install on FP-20xx or cFP-20xx controllers. These controllers will continue to work with previous versions of NI-Serial.

ID 298769: Incorrect Parity Setting

Mark and space parity were not properly configured on some cRIO, sbRIO, and cFP controllers. This has been fixed.

ID 288089: Flow control may not disengage

When using multiple forms of flow control simultaneously on a single port, it was possible for flow control to fail to disengage, preventing data transmission. This has been fixed.

ID 287461: Possible loss of data preceding serial error

Several bytes of valid data could be discarded immediately prior to the reception of a serial error, such as a parity or overrun error. This valid data is now properly received prior to handling the error condition.

ID 286317: Data reception could halt

When the RX FIFO became completely full on some cRIO, sbRIO, and cFP controllers, the port could stop receiving data. This has been fixed.

ID 288079: Possible crash when rebooting cRIO while using NI 987x modules

It was possible for a cRIO controller to crash during reboot when using serial ports on a C Series module. This has been fixed.

ID 277876: Controller may hang on reboot

In some rare circumstances, the process of shutting down serial ports for a reboot could cause the controller to hang. This has been fixed.

Changes and Fixed Issues in Version 3.7.1Add support for the NI cRIO-9075/6 Controller

NI-Serial for LabVIEW Real-Time, Version 3.7.1, adds support for the NI cRIO-9075 and cRIO-9076 Controllers.

Changes and Fixed Issues in Version 3.7NI 9870 and NI 9871 Modules

NI-Serial 3.7 allows users to access the NI 9870 and 9871 modules directly from LabVIEW Real-Time 2010 without using the LabVIEW FPGA interface.

To enable this support, install NI-Serial 3.7 and NI-VISA for LabVIEW Real-Time on a Compact RIO Target that supports RIO Scan Interface (RSI). When detecting the modules, users will have the option to add the module directly to the chassis in the LabVIEW project.

If using NI-RIO 3.5.x and lower, you may see warning pop-ups indicating that the NI 987x modules are not supported on RSI. These warnings can be ignored. For more information go to ni.com/kb and search for 5DTFTOL1.

Port Numbering Behavior

NI-Serial 3.7 changes the way that ports are numbered when detecting boards. Under some circumstances inserting new boards into a system may cause port numbers to change. For more information go to ni.com/kb and search for 5D2G85G2.

Serial Settings Persist after Uninstall

The behavior of settings on uninstall was reverted in NI-Serial 3.8. Please refer to Changes and Fixed Issues in NI-Serial 3.8 for more information.

Serial settings stored in the niserial.dbs file, including port numbers, will persist after uninstalling NI-Serial 3.7 from a Real-Time target. The modifications to the niserial.dbs file will also persist through reinstalls of the NI-Serial driver. To reset these settings to default, delete the niserial.dbs file from the Real-Time target.

Changes and Fixed Issues in Version 3.6Add support for PXI Express serial hardware

NI-Serial for LabVIEW Real-Time, Version 3.6, adds support for National Instruments PXI Express serial interfaces. Refer to the chart of Supported Interfaces for detailed model information.

NI PXIe-8431 hardware adds support for higher baud rates

For some applications, it may be possible to use a NI PXIe-8431 interface for communicating at up to 10 MBaud. For more information go to ni.com/kb and search for 58KEI82F.

PXI chassis and slot information

When upgrading to NI-Serial 3.6 on some configurations, port assignments may change. For best results, please identify all PXI chassis through Measurement & Automation Explorer.

Issues resolved in NI-Serial for LabVIEW Real-Time Version 3.6ID 193240: A hang could occur when using Asynchronous IO in a Timed Loop on LabVIEW Real-Time.
Changes and Fixed Issues in Version 3.5.2Add support for PCI Express serial hardware

NI-Serial for LabVIEW Real-Time, Version 3.5.2, adds support for National Instruments PCI Express serial interfaces. Refer to the chart of Supported Interfaces for detailed model information.

Add support for cRIO-9024 and cRIO-9073 controllers

NI-Serial for LabVIEW Real-Time, Version 3.5.2, adds support for the cRIO-9024 and cRIO-9073 controllers.

Add support for NI 9792

NI-Serial for LabVIEW Real-Time, Version 3.5.2, adds support for the NI 9792 controller.

On-chip flow control

NI-Serial for LabVIEW Real-Time, Version 3.5.2, adds support for on-chip flow control. Previous driver versions implemented flow control in the driver, which in some circumstances could allow data loss. All PCI, PXI, and PCI Express interfaces now utilize on-chip RTS/CTS flow control. 8430-series hardware also supports on-chip DTR/DSR and XON/XOFF flow control.

Performance changes for some cRIO, cFP, and sbRIO controllers:

NI-Serial 3.5.2 includes performance changes that impact cRIO-901x, cRIO-907x, sbRIO-96xx, and cFP-22xx controller families. This change greatly reduces the CPU overhead of reading data from the serial port at high speed. An impact of this change is that increased latency may be seen when reading small numbers of bytes from the serial port. For more information about this change and possible solutions if you have issues with the increased latency, visit ni.com/kb and search for Knowledgebase 55597DG2.

Issues resolved in NI-Serial for LabVIEW Real-Time Version 3.5.2

• ID 111717: When viewing threads through the Execution Trace Toolkit, some NI-Serial threads were unnamed.
• ID 200568: When entering custom settings in the niserial.dbs file, it was possible for them to be deleted from the file upon reboot instead of being applied to the driver.
  

Changes and Fixed Issues in Version 3.3.4Add support for NI 31xx and EVS-146x controllers

NI-Serial for LabVIEW Real-Time, Version 3.3.4, adds support for the NI 3100, NI 3110, and EVS-146x controllers.

Changes and Fixed Issues in Version 3.3.3Add support for the NI cRIO-9022 Controller

NI-Serial for LabVIEW Real-Time, Version 3.3.3, adds support for the NI cRIO-9022 Controller.

Issues resolved in NI-Serial for LabVIEW Real-Time Version 3.3.3ID 112229: Using Restore Defaults through Measurement & Automation Explorer restored incorrect FIFO settings for some ports on PXI and Desktop RT controllers.
Changes and Fixed Issues in Version 3.3.2Add support for NI sbRIO Controllers

NI-Serial for LabVIEW Real-Time, Version 3.3.2, adds support for NI sbRIO controllers.

Add support for NI Smart Camera Controllers

NI-Serial for LabVIEW Real-Time, Version 3.3.2, adds support for NI 17xx Smart Cameras.

Issues resolved in NI-Serial for LabVIEW Real-Time Version 3.3.2

• ID 93992: Use of modem line change events could result in system hang on various controllers.
• ID 94261: cFP or cRIO controllers could fail to detect modem line changes or properly time out an I/O request.
• ID 55220: System could hang if a UART error occurred while reading data from the FIFO.
• ID 73422: Use of modem line change events could result in system hang on some cRIO and cFP controllers.
• ID 73002: Repeated Open/Close operations could cause system instability on some cRIO, cFP, and Smart Camera controllers.
  

Changes and Fixed Issues in Version 3.3Add support for LabVIEW Real-Time 8.5 with SMP Extensions

NI-Serial for LabVIEW Real-Time, Version 3.3, adds support for multi-core real-time targets.

Add support for new National Instruments Real-Time Controllers

NI-Serial for LabVIEW Real-Time, Version 3.3, adds support for the cRIO-9072, and cRIO-9074 controllers.

Issues resolved in NI-Serial for LabVIEW Real-Time Version 3.3

• Incoming data could sometimes fail to be read if the port of a cRIO-9002/9004 was opened with data streaming to the port.
• Some controllers could have experienced a system hang if a line error were received while the port was in the process of closing.
• Under some conditions the serial driver could fail to properly time out an I/O Request.
  

Changes in Version 3.2Add support for report generation in Measurement & Automation Explorer

NI-Serial for LabVIEW Real-Time, Version 3.2, adds support for report generation in Measurement & Automation Explorer (MAX). Report generation allows you to take a snapshot of what hardware is installed and configured on your system.

Changes in Version 3.1Add support for built-in ports on cRIO, FieldPoint, and Compact Vision controllers

NI-Serial for LabVIEW Real-Time, Version 3.1, adds support for cRIO, FieldPoint, and Compact Vision controllers running LabVIEW Real-Time.

Changes in Version 3.0Add support PCI/PXI-843x hardware

NI-Serial for LabVIEW Real-Time, Version 3.0, adds support for the new PCI/PXI-843x family of hardware.

Supported Versions of LabVIEW Real-Time

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• LabVIEW Real-Time 2013 SP1
• LabVIEW Real-Time 2012 SP1
• LabVIEW Real-Time 2011 SP1
• LabVIEW Real-Time 2010 SP1
  

Supported Interfaces

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• PCI
• PCI Express
• PXI
• PXI Express
• ENET
• Real-Time Controllers
• Serial C Series Modules
  

PCI Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
PCI-8430/2	RS-232	2	No	1000.0
PCI-8430/4	RS-232	4	No	1000.0
PCI-8430/8	RS-232	8	No	1000.0
PCI-8430/16	RS-232	16	No	1000.0
PCI-8431/2	RS-485/RS-422	2	No	3000.01
PCI-8431/4	RS-485/RS-422	4	No	3000.01
PCI-8431/8	RS-485/RS-422	8	No	3000.01
PCI-8432/2	RS-232	2	Yes	1000.0
PCI-8432/4	RS-232	4	Yes	1000.0
PCI-8433/2	RS-485/RS-422	2	Yes	3000.01
PCI-8433/4	RS-485/RS-422	4	Yes	3000.01
PCI-232/2	RS-232	2	No	115.2
PCI-232/4	RS-232	4	No	115.2
PCI-232/8	RS-232	8	No	115.2
PCI-232/16	RS-232	16	No	115.2
PCI-485/2	RS-485/RS-422	2	No	460.8
PCI-485/4	RS-485/RS-422	4	No	460.8
PCI-485/8	RS-485/RS-422	8	No	460.8
PCI-232I/2	RS-232	2	Yes	115.2
PCI-232I/4	RS-232	4	Yes	115.2
PCI-485I/2	RS-485/RS-422	2	Yes	460.8
PCI-485I/4	RS-485/RS-422	4	Yes	460.8
PCI Express Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
NI PCIe-8430/8	RS-232	8	No	1000.0
NI PCIe-8430/16	RS-232	16	No	1000.0
NI PCIe-8431/8	RS-485/RS-422	8	No	3000.01
NI PCIe-8431/16	RS-485/RS-422	16	No	3000.01
PXI Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
PXI-8430/2	RS-232	2	No	1000.0
PXI-8430/4	RS-232	4	No	1000.0
PXI-8430/8	RS-232	8	No	1000.0
PXI-8430/16	RS-232	16	No	1000.0
PXI-8431/2	RS-485/RS-422	2	No	3000.01
PXI-8431/4	RS-485/RS-422	4	No	3000.01
PXI-8431/8	RS-485/RS-422	8	No	3000.01
PXI-8432/2	RS-232	2	Yes	1000.0
PXI-8432/4	RS-232	4	Yes	1000.0
PXI-8433/2	RS-485/RS-422	2	Yes	3000.01
PXI-8433/4	RS-485/RS-422	4	Yes	3000.01
PXI-8420/2	RS-232	2	No	115.2
PXI-8420/4	RS-232	4	No	115.2
PXI-8420/8	RS-232	8	No	115.2
PXI-8420/16	RS-232	16	No	115.2
PXI-8421/2	RS-485/RS-422	2	No	460.8
PXI-8421/4	RS-485/RS-422	4	No	460.8
PXI-8421/8	RS-485/RS-422	8	No	460.8
PXI-8422/2	RS-232	2	Yes	115.2
PXI-8422/4	RS-232	4	Yes	115.2
PXI-8423/2	RS-485/RS-422	2	Yes	460.8
PXI-8423/4	RS-485/RS-422	4	Yes	460.8
PXI Express Interfaces	Standard	# Ports	Isolated	Max Baud (kbaud)
NI PXIe-8430/8	RS-232	8	No	1000.0
NI PXIe-8430/16	RS-232	16	No	1000.0
NI PXIe-8431/8	RS-485/RS-422	8	No	3000.01, 2
NI PXIe-8431/16	RS-485/RS-422	16	No	3000.01, 2
ENET Interfaces3	Standard	# Ports	Isolated	Max Baud (kbaud)
ENET-232/23	RS-232	2	No	230.4
ENET-232/43	RS-232	4	No	230.4
ENET-485/23	RS-485/RS-422	2	No	460.8
ENET-485/43	RS-485/RS-422	4	No	460.8
Real-Time Controllers	Standard	# Ports	Isolated	Max Baud (kbaud)
cDAQ-913x4	RS-232 RS-485/422	1 15	No Yes	115.2 230.4
cFP-2100	RS-232	1	No	115.2
cFP-2110	RS-232	2	No	115.2
cFP-2120	RS-232 RS-485/422	3 15, 6	No No	115.2 115.2
cFP-2200	RS-232	1	No	115.2
cFP-2210	RS-232	2	No	115.2
cFP-2220	RS-232 RS-485/422	3 15	No No	115.2 230.4
cRIO-900x	RS-232	1	No	115.2
cRIO-901x	RS-232	1	No	230.4
cRIO-902x	RS-232	1	No	230.4
cRIO-907x	RS-232	1	No	230.4
cRIO-908x4	RS-232 RS-485/422	1 15	No Yes	115.2 230.4
CVS-1454 CVS-1456	RS-232	1	No	115.2
CVS-1457RT	RS-485/422	1	No	115.2
Desktop RT	RS-232	1/2	No	115.2
EVS-146x	RS-232	1	No	115.2
NI 172x Smart Cameras	RS-232	15	No	230.4
NI 174x Smart Cameras	RS-232	15	No	230.4
NI 176x Smart Cameras	RS-232	15	No	230.4
NI 177x Smart Cameras	RS-232	15	No	115.2
NI 31xx	RS-232	1	No	115.2
NI 9792	RS-232	1	No	230.4
PXI Controllers	RS-232	1/2	No	115.2
sbRIO-96xx	RS-232	1	No	230.4
Serial C Series Modules7	Standard	# Ports	Isolated	Max Baud (kbaud)
NI 9870	RS-232	4	Yes	115.2
NI 9871	RS-485	4	Yes	115.2

1. The two-wire auto control mode for RS-485 transceiver control has a maximum baud rate of 2 Mbaud.

2. For possible use with higher baud rates, refer to ni.com/kb and search for KnowledgeBase 58KEI82F.

3. NI-Serial for LabVIEW Real-Time does not provide native driver support for Serial ENET interfaces. However, you may use your Serial ENET interfaces on LabVIEW Real-Time through the NI-VISA Serial ENET Passport.

4. NI-Serial interfaces cannot currently be used across the MXI interface on cRIO-908x and cDAQ-913x controllers.

5. This port supplies connections only for transmit, receive, and ground.

6. This port supports only the 4-wire transceiver control mode.

7. Serial C Series Modules may be used through NI-Serial and NI-VISA on backplanes configured to use NI-RIO IO Scan. To enable this support, NI-Serial 9870 and 9871 Scan Engine Support must be installed on the controller. For assistance with configuring a controller and backplane to use NI-RIO IO Scan, please refer to the NI-RIO documentation.

Legal Information

---

Copyright

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End-User License Agreements and Third-Party Legal Notices

You can find end-user license agreements (EULAs) and third-party legal notices in the following locations after installation:

• Notices are located in the \_Legal Information and directories.
• EULAs are located in the \Shared\MDF\Legal\license directory.
• Review \_Legal Information.txt for information on including legal information in installers built with NI products.
  

Trademarks

Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for information on National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.

Patents

For patents covering the National Instruments products/technology, refer to the appropriate location: Help» Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents.