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8.1 PLC Parameters
8.1.2 High Performance model QCPU, Process CPU, Redundant CPU
8
PARAMETERS
(4) PLC RAS (PLC RAS (1)
*1
)
Set various items for the RAS function.
 * 1 : When the PLC parameters of the Redundant CPU are set, the PLC parameter screen of GX 
Developer displays "PLCRAS setting (1)".
 * 2 : Cannot be set when the Redundant CPU is used.
(Continued on next page)
Diagram 8.15 PLC RAS
Table8.15 PLC RAS list
Item Parameter No. Description Setting range Default value Reference
WDT 
(watchdog 
timer) 
setting
WDT 
setting
3000
H
Set the watchdog timer value of 
the CPU module.
10ms to 2000ms (10ms unit) 200ms Section 3.2
Initial 
execution 
monitoring 
time
Set the watchdog timer value 
when an initial execution type 
program is used.
10ms to 2000ms (10ms unit) No setting Section 3.3.1
Low speed 
execution 
monitoring 
time
*2
Set the watchdog timer value 
when a low speed execution 
type program is used.
10ms to 2000ms (10ms unit) No setting Section 3.3.3