Siemens SIMATIC FM 353 Manual page 104

Programming the Technological Functions
Table 6-5 Diagnostic information, continued
Data Message
Format
10 x When the
byte b t POS_DIAG block is POS DIAG bl
called, the informa- called, the informa-
tion (incl. bytes 0 to
3) is read and en- 3) is read and en
tered in the AW-DB tered in the AW-DB
(DBB70).
When an operating
error occurs, the er-
ror number can be ror number can be
read via Read re-
quest DBX42.5 (AW-
DB, DBB86 to 89)
Tips for the user
Following a diagnostic interrupt, the diagnostic information and the associated
module address (OB82_MDL_ADDR) is made available in the local data area of
OB 82 for quick analysis.
Local data
Fig. 6-3
6-24
User DB
DBB74 FM pos. ID (74H)
k i
DBB75 Length of the diagnostic information (16)
DBB76 Number of channels (1)
DBX77 Channel vector error (1)
DBX78.0 Unassigned
...5
DBX78.7 Operating error (see Chapter 11, Troubleshooting)
DBB79... Unassigned
83
MDL_DEFECT
Module error
EXT_FAULT
INT_FAULT
Internal
error
COMM_FAULT
WTCH_DOG_FLT
INT_PS_FLT
EPROM_FLT
RAM_FLT
HW_INTR_FLT
Evaluating diagnostic data
Description
PNT_FAULT
External External
error channel error
AW-DB
Byte.Bit: 78.0...7
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0