Parameter Restart Inhibit Ix & Ix+1; Table 42: Equivalent Evaluation - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-667/000-003 4FDI/4FDO 24V/2A PROFIsafe V2 iPar
The F I/O module compares the signal states of the digital inputs affected to the
same values. The following table shows the possible signal states for the
equivalent evaluation:

Table 42: Equivalent Evaluation

I2
I4
0
0
1
1
After the set discrepancy time has elapsed, an illegal signal state leads to the
detection of a discrepancy error by which the F I/O module is passivated and the
"Discrepancy time exceeded" diagnostic message is output.
8.3.4.6 Parameter Restart Inhibit Ix & Ix+1
Measures required if the Restart inhibit parameter is set to "no"!
If you have set the Restart inhibit parameter to "No", then if the F I/O module
outputs the "Discrepancy time exceeded" diagnostic message to the secure PLC,
you must independently ensure that all necessary repair measures are
implemented immediately because the following errors could be dangerous!
The Restart inhibit parameter is used to set the reintegration behavior of the
F I/O module after a discrepancy error between the digital inputs.
The Restart inhibit parameter is used for the dual channel evaluation of two
digital inputs. The restart inhibit is then only used by the F I/O module if you have
set the value of the Operating mode parameter to "Standard" and the value of
the Dual channel evaluation parameter to "yes".
You can set the Restart inhibit parameter to "Yes" or "No".
If you have set the Restart inhibit parameter to "Yes", then the F I/O module
behaves as follows:
A fixed discrepancy error can only be acknowledged if the input signals have
taken the values listed in the following table.
Inputs
I1
I3
0
1
0
1
Version 1.4.2, valid from HW/SW Version 01/02
Commissioning 101
Process Image
Bit 1 Bit 0
Bit 3 Bit 2
0 0
0 0
0 0
1 1
Signal State
0 Signal
Illegal
Illegal
1 Signal
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