Diagnostic Data of Fail-Safe Modules
ET 200pro Distributed I/O System - Fail-Safe Modules
142 Operating Instructions, 05/2007, A5E00394073-02
Data Records 0 and 1 of the System Data
The diagnostic data of a module can be up to 44 bytes long and is located in data records 0
and 1 of the system data area:
● Data record 0 contains 4 bytes of diagnostic data that describe the state of the F-module.
● Data record 1 contains
– The 4 bytes of diagnostic data of the F-module that are also in data record 0 and
– Up to 40 bytes of channel-specific diagnostic data depending on the F-module (see
"
Channel-Specific Diagnostics Starting at Byte 8"
).
Description
The structure and content of the individual diagnostic data bytes are described below.
In general, the following applies: If a fault occurs, the corresponding bit is set to "1".
Bytes 0 and 1
The following figure shows the content of bytes 0 and 1 of the diagnostic data.
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Figure A-1 Bytes 0 and 1 of Diagnostic Data
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