Diagnostic Interrupts For Internal Errors - Siemens SIMATIC FM 351 Installation Manual

Error Handling
Diagnostic
Interrupts
Table 11-1
Bit
0.0
0.1
0.2
03
0.4
2.3
11
7.0
7.1
11-6
The following table shows all diagnostic interrupts output by the FM 351.
The byte details in the following table are relative to the Address 72.0 of the
relevant channel DB.

Diagnostic Interrupts for Internal Errors

Error Analysis and Rectification
Module is faulty - more precise analysis is possible (see Figure 11-2)
Internal error has occurred - more precise analysis is possible (see Figure 11-2)
External error has occurred - more precise analysis is possible (see Figure 11-2)
Channel error (internal or external) - more precise analysis is possible (see Figure 11-2)
External auxiliary voltage 24 V missing
Cause External 24 V auxiliary voltage is not connected.
Fuse on the module is defective.
Low voltage.
Ground wire breakage.
Effect See Page 11-3
The processing is aborted.
The outputs are switched off.
With incremental encoders, synchronization is deleted.
Start enable is deleted.
Rectifica- Make sure that the 24 V connection is correct. (If 24 V connection is correct, then the
tion module is defective.)
Internal time monitoring (watchdog)
Cause Strong interference on the FM 351.
Error in the FM 351.
Effect Module is reset.
Provided that after resetting the module, no module defect (see Chapter 11.1) is
detected, the module is ready for operation again.
The module signals the expired WATCHDOG with "incoming" and "outgoing".
Rectifica- Eliminate the interference.
tion
If the manual instructions are followed, the errors should not occur.
However, if this is the case, please contact the appropriate sales department. It is
very important to state the exact circumstances leading to the error.
Replace the FM 351.
Channel 1 faulty - more precise analysis is possible (see Figure 11-2)
Channel 2 faulty - more precise analysis is possible (see Figure 11-2)
Error Signal, Event
Number
0x8000
0x8001
0x8002
0x8003
0x8004
0x8033
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02