Chapter 4
Signal Connections
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National Instruments Corporation
4-21
RTSI Connector
The PCI-7390 uses a ribbon cable to connect to other RTSI-capable
PCI devices.
RTSI Signal Considerations
The PCI-7390 motion controller allows you to use up to eight RTSI trigger
lines as sources for trigger inputs, or as destinations for breakpoint outputs
and encoder signals. Breakpoint outputs are output-only signals that
generate an active high pulse of 200 ns duration, as shown in Figure 4-17.
Figure 4-17.
Breakpoint across RTSI
Encoder and Index signals are output-only signals across RTSI that are
the digitally-filtered versions of the raw signals coming into the controller.
If you are using the RTSI bus for motion I/O or generic digital I/O,
all signals are passed through unaltered.
200 ns
