Configuration Options with the ET 200M
3-22
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
3.8 Identification Data
Identification data is information stored in a module and supports the user when
eliminating faults in a system
checking the system configuration
locating hardware modifications in a system
The identification data allows modules to be clearly and unambiguously identified
online. As of IM 153-2Bx00 this data is available on the ET 200M.
In STEP 7 the identification data is displayed in the tabs ”Module
Status – IM 153-2” and ”Properties – DP Slave”.
Reading the Identification Data
The user can access specific identification data using Read Data Record. The
data is accessed in two stages:
1. A directory containing the data record numbers for the various indices is stored
in data record 248 (see Table 3-1).
Table 3-1 Structure of data record 248 for ET 200M
Contents Length (bytes) Code (hex)
Header information
ID of contents directory 2 00 01
Index of contents directory 2 00 00
Length of subsequent blocks in bytes 2 00 08
Number of blocks 2 00 05
Block information for identification data
SSL ID
Associated data record number
Length of data record
Index
2
2
2
2
F1 11
00 E7
00 40
00 01
SSL ID
Associated data record number
Length of data record
Index
2
2
2
2
F1 11
00 E8
00 40
00 02
SSL ID
Associated data record number
Length of data record
Index
2
2
2
2
F1 11
00 E9
00 40
00 03
SSL ID
Associated data record number
Length of data record
Index
2
2
2
2
F1 11
00 EA
00 40
00 04
8 byte block information for additional data record objects
Σ: 48
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