Svcreq 18: Read I/O Override Status; 1Output Parameter Block For Svcreq 18; 2Example Of Svcreq 18 - GE VersaMax PLC User Manual

11.17 SVCREQ 18: Read I/O Override Status

%I0001
SVC_
REQ
CONST
FNC
00018
%R1003
PARM
The Service Request Function
For public disclosure
Use SVCREQ 18 to check for any overrides in the CPU's %I and %Q memories.
11.17.1 Output Parameter Block for SVCREQ 18
This function has an output parameter block only. Its length is 1 word.
address 0 = No overrides are set.
1 = Overrides are set.
11.17.2 Example of SVCREQ 18
The following SVCREQ reads the status of I/O overrides memory into location %R1003.
The equality function checks %R1003 to see if it is equal to (the constant) 1. If it is, the
equality function turns on output %T0001.
EQ_
INT
CONST
Q
I1
00001
%R1003 I2
%T0001
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