Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 109)

Read/write image data
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Read local diagnostics ID1 to ID16
The local diagnostics (ID1 – ID8) bytes indicate the status of
the individual NET stations. The connection to the remote
station (only EZD) is indicated via ID9.
Telegram structure
Byte Meaning Value (hex), sent by
Master Slave
0 Toggle byte J page 94
1 Command: Read 91 –
Response:
Read successful – C2
Command
rejected
– C0
2 Len 02 02
3 Type 03 03
4 Index 00 00
5 Data 1 (Low Byte) 00 J Table 46
6 Data 2 (High Byte) 00 J Table 46
7 – 8 Data 3 – 4 00 00