Download Siemens ET 77..UC Operating instructions

Other modules
14.2 Watchdog module
Parameter
Parameter
Range of values
Default
Applicability
Mode
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Disabled
write/ read
write/ read neg.
Toggle 0.1 Hz
Toggle 0.5 Hz
Toggle 1 Hz
Toggle 2 Hz
write/ read
Module
Response to CPU/
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Keep last value
Set to 00H
Set to FFH
Keep last value
Module
Master STOP
Parameter description: Mode
Disabled: A value that you write to the output byte is not transferred to the input byte.
write/ read: A value that you write to the output byte is transferred to the input byte.
write/ read neg.: A value that you write to the output byte is inverted and transferred to the
input byte.
toggle 0.1 Hz; toggle 0.5 Hz; toggle 1 HZ; toggle 2 Hz: Bit 0 (see address space of inputs
and outputs) in the input byte of PII toggles (flashes) at the specified frequency.
Parameter description: Response to CPU/Master STOP
Keep last value: The last value in the output byte of the PIQ is retained.
Set to 00H: The value in the output byte of the PIQ is set to 00H.
Set to FFH: The value in the output byte of the PIQ is set to FFH.
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ET 200iSP
Operating Instructions, 01/2010, A5E00247483-04