108 Commissioning
WAGO-I/O-SYSTEM 750
750-666/000-003 4FDI/2FDO 24V/10A PROFIsafe V2 iPar
Manual
Version 1.2.0, valid from HW/SW Version 01/01
The PROFIsafe I/O module compares the signal states of the digital inputs
affected to the opposing values. The following table shows the possible signal
states for the antivalent evaluation:
Table 30: Antivalent evaluation
Inputs
Process image:
I2
I4
I1
I3
Bit 1
Bit 3
Bit 0
Bit 2
Signal state
0
0
0
0
Illegal
0
1
0
1
1 Signal
1
0
0
0
0 Signal
1
1
0
0
Illegal
After the set discrepancy time has elapsed, an illegal signal state leads to the
detection of a discrepancy error by which the PROFIsafe I/O module is passivated
and the "Discrepancy time exceeded" diagnostic message is output.
If you have set the
Valence evaluation
parameter to "Equivalent", then the
PROFIsafe I/O module behaves as follows:
The PROFIsafe 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 31: Equivalent evaluation
Inputs
Process image:
I2
I4
I1
I3
Bit 1
Bit 3
Bit 0
Bit 2
Signal state
0
0
0
0
0 Signal
0
1
0
0
Illegal
1
0
0
0
Illegal
1
1
1
1
1 Signal
After the set discrepancy time has elapsed, an illegal signal state leads to the
detection of a discrepancy error by which the PROFIsafe I/O module is passivated
and the "Discrepancy time exceeded" diagnostic message is output.
7.4.5.6
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 PROFIsafe 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
PROFIsafe I/O module after a discrepancy error between the digital inputs.