Siemens SIMATIC Operating Instructions Manual page 37

Note
Channel-specific diagnostics are always updated as far as the current diagnostic function in
the diagnostic frame. Subsequent, older diagnostic functions are not deleted.
Remedy: Evaluate the valid current length of the diagnostic frame in
RET_VAL parameter of SFC 13.
Possible Fault Types of Fail-Safe Modules
The following table lists the fault types of channel-specific diagnostics. You can obtain
detailed diagnostic information via
Table 5-1 Fault Types of Channel-Specific Diagnostics
Fault type Diagnostic function in
STEP 7
00001 1 Short circuit
B D
00100 4 Overload
B D
00101 5 Overtemperature
B D
00110 6 Open circuit
B D
01001 9 Fault
B D
10000 16 Parameter assignment
B D
error
10001 17 Sensor voltage or load
B D
voltage is missing
10011 19 Communication error
B D
11001 25 Safety-related shutdown
B D
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
HW Diagnostics
F-module Special meaning for F-modules
All Short circuit to L+ on the unconnected sensor wire
Short circuit to L+ sensor supply
Ground short circuit or defective sensor supply
Internal fault in the read circuit/test circuit
4/8 F-DI/4 F-DO P output driver defective
Short circuit of output to L+ or output driver
M output driver defective
Short circuit of output to M or output driver
F-Switch Output driver overcurrent
P output driver defective
Short circuit of output to L+ or output driver
Short circuit of output to M or output driver
4/8 F-DI/4 F-DO Output driver overcurrent
All -
4/8 F-DI/4 F-DO Wire break
All RAM error
EPROM error
Processor failure (expected DIP switch value/actual
DIP switch value)
Internal fault in the read circuit/test circuit
All Parameter assignment error
All Module-internal supply voltage
4/8 F-DI/4 F-DO, Load voltage is defective or not connected
F-Switch
All Cyclic redundancy check (CRC) error in data
message frame
Monitoring time for data message frame exceeded
All Discrepancy error
4/8 F-DI/4 F-DO, Switching frequency too high
F-Switch
5.2 Error Diagnostics
STEP 7
STEP 7
in .
Diagnostics
using the
37