WAGO -I/O-SYSTEM 750 Manual page 105

WAGO-I/O-SYSTEM 750
750-667/000-003 4FDI/4FDO 24V/2A PROFIsafe V2 iPar
Internal test pulse also when test pulse duration = 0 ms!
(applies to SW version 06)
Please note that the F I/O module up to software version 06 also performs an
internal test pulse expressed by briefly switching off all digital power outputs
when the test pulse duration is set to 0 ms. This is necessary to achieve the high
diagnostic coverage level and typically lies at well under 1 ms. You have to take
this into account when laying out your connected actuators and sensors.
Behavior of the F I/O module in the event of a failure
If an error is detected on a digital input or digital power output by the F I/O
module, the entire F I/O module is passivated by the process image of all digital
inputs being set to "0" and all digital power outputs being switched off. For
detailed information, read the section "Diagnostics".
Version 1.4.2, valid from HW/SW Version 01/02
Commissioning 105
Manual