Siemens SIMATIC ET 200S Installation And Operating Manual page 136

Fail-Safe Modules
7.5 4/8 F-DI VDC24V PROFIsafe Digital Electronic Module
Diagnostic
Message
Discrepancy
error (1oo2
evaluation)
For more detailed information on passivation and reintegration of F-I/O, refer to
"Diagnostics"
Programmable Controllers S7 F/FH
Generally Applicable Information on Diagnostics
For information in diagnostics that affects all fail-safe modules (such as readout of diagnostic
functions; passivation of channels)see this manual in
S7 Distributed Safety, Configuration and Programming
S7 F/FH
See also
Fault Diagnostics (Page 5-3)
7-76
Possible Causes
Faulty process signal
Defective sensor
Short circuit between unconnected
sensor cable and the sensor supply
cable
Wire break in connected sensor cable
or the sensor supply cable
Assigned discrepancy time too short
S7 Distributed Safety, Configuration and Programming
and the
.
Corrective Measures
Check process signal, replace sensor if
necessary
Eliminate short circuit
Eliminate broken wire
Check the assigned discrepancy time
Once the fault is eliminated, the F-module
must be reintegrated in the safety
program.
manuals.
"Diagnostics"
manual or
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
or
and the
Programmable Controllers