Siemens SIMATIC FM 353 Manual page 103

Error evaluation
Errors are flagged in the Binary Result (BR = 0) and by RET_VAL < 0.
Possible errors are as follows:
Data transfer error during transfers with SFC 51 "RDSYSST". The error is made
available in the user DB AW-DB, DBW96 (see Error List, Section 6.8).
Diagnostic data
The prerequisite for the generation of a diagnostic interrupt is activation of the in-
terrupt with the aid of the appropriate parameters (see Section 5.2).
If the user program does not contain an OB 82, the CPU goes to STOP.
The Table below contains the diagnostic information for the FM 353.
Table 6-5 Diagnostic information
Data Message
Format
4 x 1 When a diagnostic
byte b t interrupt is gener- i t t i
ated, the relevant in- ated, the relevant in-
formation is made
available in the CPU il bl i th CPU
(local data area, OB (local data area, OB
82) and is entered in
AW DB by calling AW-DB by calling
POS_DIAG.
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Programming the Technological Functions
User DB
DBX70.0 Module/group errors
DBX70.1 Internal error/hardware error (group error bytes 72, 73)
DBX70.2 External error
DBX70.3 External channel error (group error byte 78)
DBX70.6 Module not initialized
DBX71.0 Module type class for FM 353 = 08H
...3
DBX71.4 Channel information available
DBX72.1 Communication error (K bus)
DBX72.3 Response from watchdog timer
DBX72.4 Internal supply voltage to the module failed (NMI)
DBX73.2 FEPROM error
DBX73.3 RAM error
DBX73.6 Process interrupt lost
Description
6-23