Siemens S5-135U/155U - Manual (Page 509)

10-13
System Manual
C79000-G8576-C199-06
10.3.3 Setting the Switch S5
ON: PESP‘ monitoring on
Monitoring time
RDY/ is suppressed in case of fault
RDY/ is also output in case of fault
ON:
OFF:
When BASP is active (“1” signal)
RDY/ is always output
125ms
500ms
250ms
1s
1 2 3 4 5 6 7 8
ON
OFF
Select the monitoring time (between 125 ms and 1 s) by switching one of the
switches S5/1 to S5/4 to ON. If none of the four switches S5/1 to S5/4 is in
the ON position, for safety reasons the monitoring time has been set to 1 s.
If serial interface modules and the link between IM 304 and IM 314 are used,
the PESP‘ monitoring is to be switched off (see Section 10.1.4: Control line
faults).
Should the acknowledgement signal (RDY/) not be suppressed in the event of
a fault, the switch S5/8 must be in the OFF position.
When a BASP signal is active, the RDY/ signal will always be output.
Monitoring Module