Disable Dark Test For 48 Hours; Activated - Siemens SIMATIC ET 200SP Equipment Manual

4.2.2.2

Disable dark test for 48 hours

This option allows you to suppress the dark test.
To suppress dark test pulses, you must ensure that all channels together carry the 0-signal
once within the 48 hours. If this condition is not fulfilled, all dark test pulses will be applied
anyway on all channels after expiration of this time.
With 0-signal channels, the test pulses of light test continue to occur.
When you use the function "Disable dark test for 48 hours", cross-circuits between channels
with 1-signal are not detected.
If an error caused by short-circuits (cross-circuits) is detected when you request the safety
function (shutdown of the output), not only is this output passivated, but all outputs are
shut down and the F-module is passivated.
Also take into consideration the respective requirements of your product standards
regarding error detection time.
When you activate the parameter "Disable dark test for 48 hours", all channels use the values
set for channel 0 for the parameter "Max. readback time light test / dark test".
4.2.2.3

Activated

The channel is always activated for this F-module.
Digital output module F-DQ 8x24VDC/0.5A PP HF (6ES7136-6DC00-0CA0)
Equipment Manual, 12/2022, A5E38578424-AB
WARNING
Parameters/address space
4.2 Explanation of parameters
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