Chapter 1
Introduction
1-14
ni.com
Figure 1-5.
Interaction of NI-CAN Software Components
RTSI Bus Overview
The RTSI Solution
A common problem with interface boards is that you cannot easily
synchronize several functions across multiple boards to a common trigger
or timing event. The CAN boards use the Real-Time System Integration
(RTSI) bus to solve this problem.
For PCI-CAN and AT-CAN series boards, the RTSI bus consists of
connecting the National Instruments RTSI bus interface with RTSI ribbon
cable to route timing and trigger signals between the CAN board and other
National Instruments RTSI-equipped hardware. Refer to the RTSI Bus
Appendix in your CAN hardware getting started manual for detailed
information about the PCI-CAN and AT-CAN series RTSI interfaces.
For the PXI-846
x
series CAN boards, the RTSI bus consists of using the
National Instruments PXI trigger bus to route timing and trigger signals
between the PXI-846
x
series board and other National Instruments
RTSI-equipped PXI boards. Regarding the RTSI interface on your
PXI-846
x
series board, there are important issues to consider when using it
in a CompactPCI chassis. Refer to the RTSI bus appendix in your PXI-846
x
nican.dll
User Mode
Kernel Mode
NI-CAN Device Driver
CAN Hardware
nican.nfw
NI-CAN Language Interface
Your Application
