Siemens SIMATIC MV500, Operating Instructions Manual, Page: 238 / 294

Service and maintenance
10.1 Error and diagnostics messages
SIMATIC MV500
238
Operating Instructions, 03/2021, C79000-G8976-C494-05
SFB 54 "RALRM" returns the following diagnostics information with PROFINET IO in the
"AINFO" parameter (additional alarm information):
Note
Only the bytes 0 to 25 are written for outgoing alarms
Only bytes 0 to 25 of the "AINFO" parameter are written for outgoing alarms. Compare the
meaning of bytes 2 and 3 of "AINFO".
Table 10- 10 Diagnostic information of SFB 54 "RALRM" - "AINFO" parameter
Byte Value Meaning
0 ... 1 According to PNIO standard Block type
2 ... 3 W#16#001A / W#16#0016 Length of the diagnostics data with an incoming / outgoing alarm.
4 ... 5 W#16#0100 Version (fixed)
6 ... 7 W#16#0001 / W#16#000C ID for the alarm type: Diagnostics alarm incoming / diagnostics alarm
outgoing.
8 ... 11 DW#16#00000000 API (fixed)
12 ... 13 W#16#0000 Slot (fixed)
14 ... 15 W#16#0001 Subslot (fixed)
16 ... 19 DW#16#00000300 Module identification (fixed)
20 ... 23 DW#16#00000000 Submodule identification (fixed)
24 ... 25 W#16#Bxxx / W#16#xxx Alarm specification for incoming / outgoing alarm:
•
Bits 0 to 10: Sequence number
• Bit 11: Channel diagnostics: 0 (fixed)
• Bit 12: Status of vendor-specific diagnostics
• Bit 13: Status of diagnostics for submodule
• Bit 14: Reserved: 0
• Bit 15: Diagnostics status
26 ... 27 W#16#0004 ID for vendor-specific diagnostics (fixed).
28 ... 29 See value with the section "Error
messages (Page 224)"
ID of the error that occurred.
In addition to the event-related readout of the diagnostic data with the SFB 54, you also have
the option of reading out status-related diagnostics data.
You read out status-related diagnostics data using SFB 52 "RDREC".
Proceed as follows to call the SFB 52:
1.
Assign the diagnostic address of the optical reader in hexadecimal form to the "ID"
parameter.
2. Assign the value 2 to the "INDEX" parameter.