Alarm, fault and system messages
11.4 I/O device diagnostics
SIMATIC MV420 / SIMATIC MV440
350
Operating Instructions, 04/2013, A5E02371045-06
Diagnostics data record SFB 52
Byte
Value
Meaning
0 ... 1
W#16#0010
Data record type: Diagnostics data record
2 ... 3
W#16#0012
Data record length starting at byte 4: 18 bytes
4 ... 5
W#16#0100
Version
6 ... 7
W#16#0000
Slot
8 ... 9
W#16#0000
Subslot
10 ... 11
W#16#0000
Channel
12
B#16#08 / B#16#10
Error occurred / no error occurred
13
B#16#05
Identifier indicating that all variables are stored in words starting at byte
14.
14 ... 15
W#16#0004
ID for vendor-specific diagnostics (fixed)
16 ... 17
W#16#0000
Channel number
18 ... 19
W#16#0805 / W#16#1005
Content identical to that of bytes 12 and 13.
20 ... 21
Value from the table under error
messages
ID of the error that occurred.
Summary of Contents for SIMATIC MV420
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