Appendix C Register Structure and Format
PCI-1761 User’s Manual
28
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C.3 Relay I/O Registers - BASE+0H
The PCI-1761 offers 8-ch relay actuators. These I/O channels use the
input and output ports at addresses
BASE+0H.
Table C-2: Register for relay output status
Table C-3: Register for relay output
Note:
✎
The default configuration of the digital output channels is a logic 0.
This avoids damaging external devices during system start-up or
reset since the power on status is set to the default value.
Read
Relay Output Status
Bit #
7
6
5
4
3
2
1
0
BASE +0H
RS7
RS6
RS5
RS4
RS3
RS2
RS1
RS0
Write
Relay Output
Bit #
7
6
5
4
3
2
1
0
BASE +0H
RO7
RO6
RO5
RO4
RO3
RO2
RO1
RO0
