Disable Dark Test For 48 Hours - Siemens SIMATIC S7-1500 Manual

4.2.3.5

Disable dark test for 48 hours

Note
Can only be configured for PM operation.
This option allows you to suppress the dark test.
If the channel is permanently active (1) for 48 hours, one dark test pulse is applied at the
channel once this time has expired.
You must ensure the signal change from 1 to 0 at the channel yourself within 48 hours to
prevent the dark test pulse. This also applies to the operating time if the operating time is
< 48 hours. The dark test is suspended for another 48 hours after the signal change from
0 to 1.
The dark test is permanently suppressed if the following condition is met:
● A signal change from 1 to 0 takes place before the 48 hours have expired.
When you use the function "Disable dark test for 48 hours", cross-circuits and other errors
are not detected.
Also take into consideration the respective requirements of your product standards
regarding error detection time.
Digital output module F-DQ 8x24VDC/2A PPM (6ES7526-2BF00-0AB0)
Manual, 01/2016, A5E03858037-AA
WARNING
Parameters/address space
4.2 Explanation of parameters
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