Data Record Structure For I&M Data - Siemens SIMATIC ET 200AL System Manual

Commissioning
8.3 Identification and maintenance data
8.3.2 Data record structure for I&M data
Reading I&M data records (distributed via PROFINET IO)
You can directly access specific identification data by selecting Read data record ("RDREC"
instruction). You obtain the corresponding part of the identification data under the associated
data record index.
The following table shows the principle behind the structure of data records.
Table 8- 3
Header information
BlockType
BlockLength
BlockVersionHigh
BlockVersionLow
Identification data
Identification data
(see table below)
74
Basic structure of data records with I&M identification data
Contents
2
2
1
1
54
54
16
54
54
Length (bytes)
I&M0: 0020
I&M1: 0021
I&M2: 0022
I&M3: 0023
I&M4: 0024
I&M0: 0038
I&M1: 0038
I&M2: 0012
I&M3: 0038
I&M4: 0038
01
00
I&M0/Index AFF0
I&M1/Index AFF1
I&M2/Index AFF2
I&M3/Index AFF3
I&M4/Index AFF4
System Manual, 08/2019, A5E31861578-AG
Coding (hex)
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Distributed I/O system