GE VersaMax PLC User Manual

11.9 SVCREQ 8: Reset Watchdog Timer
Use SVCREQ 8 to reset the watchdog timer during the sweep. Ordinarily, when the
watchdog timer expires, the PLC shuts down without warning. SVCREQ 8 allows the
timer to keep going during a time-consuming task (for example, while waiting for a
response from a communications line).
Caution
Be sure that resetting the watchdog timer does not
adversely affect the controlled process.
11.9.1 Parameter Block Format for SVCREQ 8
This function has no associated parameter block.
11.9.2 Example of SVCREQ 8
In this example, power flow through enabling output %Q0027 or input %I1476 or internal
coil %M00010 causes the watchdog timer to be reset.

CONST
0008
SVC_
REQ
FNC
PARM
%Q0127
%I1476
%M0010
210 GFK-1503E VersaMax PLC User Manual
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GE VersaMax PLC Specifications

General

Brand	GE
Model	VersaMax PLC
Category	Controller
Language	English