11.14 SVCREQ 14: Clear Fault
Use SVCREQ 14 to clear either the PLC fault table or the I/O fault table. The SVCREQ
output is set ON unless some number other than 0 or 1 is entered as the requested
operation.
11.14.1 Input Parameter Block for SVCREQ 14
For this function, the parameter block has a length of 1 word. It is an input parameter
block only. There is no output parameter block.
0 = clear PLC fault table
1 = clear I/O fault table
11.14.2 Example of SVCREQ 14
In the example, when input %I0346 is on and input %I0349 is on, the PLC fault table is
cleared. When input %I0347 is on and input %I0349 is on, the I/O fault table is cleared.
When input %I0348 is on and input %I0349 is on, both are cleared.
The parameter block for the PLC fault table is located at %R0500; for the I/O fault table
the parameter block is located at %R0550. Both parameter blocks are set up elsewhere in
the program.
FNC
PARM
%R0500
%I0346
%I0348
%I0349
00014
SVC
_
REQ
FNC
PARM
%R0550
%I0347
%I0348
The Service Request Function GFK-1503E User Manual 215
For public disclosure