Siemens SIMATIC ET 200SP Manual page 18

Note
If you set pulse stretching for an input channel, this will also affect the chatter monitoring that
is enabled for this channel. The "pulse-stretched" signal is the input signal for the chatter
monitoring. You should therefore match the parameter settings for pulse stretching and
chatter monitoring to one another. By selecting the appropriate values for the parameters
you can adjust the functions optimally to your process.
Note
Pulse stretching in progress is reset in the event of an error in the value status (QI = 0, e.g.
wire break).
DI 8xNAMUR HF digital input module (6ES7131-6TF00-0CA0)
Manual, 02/2014, A5E03894478-01
Parameters/address space
4.3 Pulse stretching
17