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194 Appendix
WAGO-I/O-System 750
750-370 PROFINET IO Fieldbus Coupler
Manual
Version 2.0.0
Pos: 98.1 /Serie 750 (WAGO-I/O-SYST EM)/Anhang/Kanalspezifische Diag nose 1.1 ( 750-370) @ 23\mod_1439540419019_21.docx @ 188948 @ 23 @ 1
14.5 Structure of the Standardized Diagnosis Data Sets
The diagnosis data sets consist of several structures.
The first element in the data set is the head of the structure. It describes the
version and the length of the following data. The “BlockType” specifies the
structure and content of the data set. The following “BlockTypes” are used by the
fieldbus coupler.
Table 162: “BlockType”
BlockType
Description
0x0010
Diagnostic data
0x8104
Real/expected configuration mismatch
Based on the version can differ if right after the head structure of the process type
(Application Process Identifier - API) follows or not.
Table 163: “Version”
Version
Description
1.0
Data set contain not the API
1.1
Data set contain the API
The head of the structure has a length of 6 bytes and is structured as follows:
Table 164: “Head of the Structure”
Byte
offset Data type
Description
0 / 1
WORD
Content of the “BlockType” data set
0x0010
Diagnostic data set
0x8104
Configuration data set specified/actual
deviation
2 / 3
WORD
Length of the data set in bytes (BlockLength)
Including length of the version in
bytes
4/5
BYTE
0x01
BlockVersion (major) = 1
BYTE
0
Diagnostic data follow afterwards
1
API follow afterwards
6 / 7
DWORD
0x00
0x00 API = 0
8 / 9
0x00
0x00
Only in version 1.1 available
The API process type has a data length of 4 bytes. Depending on the version of
the data set, the diagnostics data follow with Byteoffset 6 (Version 1.0) or
Byteoffset 10 (Version 1.1). However, the description of the diagnostics data in
the subsections, depending on the BlockType, begins back with Byteoffset 0.