Siemens SIMATIC ET 200SP Manual page 51

ERR_PULSE is cleared with the next negative edge on the DIn.0 digital input.
Figure 3-10 DIn.0 inter-pulse duration too short
Retriggering the current On-delay
The TM Pulse 2x24V starts a new On-delay on the positive edge on the DIn.0 digital input if:
On-delay > pulse duration + inter-pulse duration
This clears the current Off-delay.
The DQn.A digital output is only set if signal level 1 is present on the DIn.0 digital input
longer than the On-delay. This enables you to filter rapid pulses.
Figure 3-11 DIn.0 retriggering the current On-delay
Technology module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 09/2015, A5E35061186-AA
Modes and Functions
3.5 On/Off-delay mode
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