Academic Company Events NI Developer Zone Support Solutions Products & Services Contact NI MyNI
2 ratings:
 3 out of 5     Rate this Document

Controlling Three Digital SCXI Modules in Parallel Mode Using the DIO-96

Hardware: Digital I/O (DIO)>>Static>>PCI-DIO-96

Problem: I have three digital SCXI modules, two SCXI-1162 modules and one SCXI-1163 module, in my SCXI-1000 chassis. I also have a Multifunction Input/Output (MIO) board controlling an SCXI-1120 in the same chassis which I also want to run in parallel mode. Can I control all three digital modules in parallel mode with just one DIO-96 and still have my MIO board controlling my SCXI-1120? If not, what are my options for running these modules in parallel mode?

Solution: Digital SCXI modules can operate in parallel mode when connected to our digital Data Acquisition (DAQ) boards such as the DIO-24, DIO-32HS (PCI-6533 family), and DIO-96 boards. The presence of an Analog SCXI module does not affect the operation of the digital modules operation in parallel mode.

Though it is possible to control thee digital SCXI modules in parallel mode using the DIO-96 board, a cheaper and easier solution is to purchase two DIO-96 boards and drive two digital modules with one DIO-96, and the other digital module with the second DIO-96. This will not only be a more simple, and cost effective solution, but it will actually increase the performance or your Data Acquisition.

To create a system that is controlled by just one DIO-96 board with three digital SCXI modules, you need to purchase the correct combination of cables and SC-205x adapter boards to separate and route the 100 pins correctly to three groups of 32 digital lines. It is possible to route 96 digital lines two three groups of 32 pins because the DIO-96 allows digital lines to be grouped into twelve 8-line ports. So it is possible to group four of these 8-line ports together to have 32 lines to control each digital SCXI module.

The particular combination of cables and modules necessary for this pin routing is:
  • (1) R1005050 cable
  • (2) SC-2054 adapters
  • (12) NB7 cables
  • (3) SC-2052 adapters
  • (3) NB1 cables
Description of System Cabling: Using a R1005050 cable, the 96 lines of the DIO-96 can be easily split into two groups of 48 lines each. The SC-2054 adapter board can then be used to split the 48 lines into 6 separate 8-line ports. The SC-2052 adapter board can then be used to combine 4 of these 8-line ports at a time into a single group of 32 lines. Please refer to the cabling diagram in the Attachments section below.

The cost of purchasing all of the cables and connector blocks involved in forming this system is higher than the cost of purchasing an additional DIO-96 and cable according to the National Instruments 2001 Product Price Listings.

For additional system configurations please see the online Product Catalog link in the related links below.
For additional technical support information please visit the SCXI Support Page and Data Acquisition Support Page listed in the related links below.

Related Links: Product Catalog: Online System Configurators
Product Manuals: PCI-DIO-96/PXI-6508/PCI-6503 User Manual
National Instruments: SCXI Support Page
National Instruments: Data Acquisition Support Page

Attachments:





Report Date: 04/13/2001
Last Updated: 06/26/2003
Document ID: 28C978JW

Your Feedback! poor Poor  |  Excellent excellent   Yes No
 Document Quality? 
 Answered Your Question? 
  1 2 3 4 5
Please Contact NI for all product and support inquiries.submit