Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 57)

Read/write image data
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Text function blocks: D1 – D16
The following commands are used to read the logic state of
the individual text function blocks (D markers).
Telegram structure
Table 12: Byte 5 to 6: Data 1 to 2
Byte Meaning Value (hex), sent by
Master Slave
0 Toggle byte J page 44
1 Command: Read 88 –
Response:
Read successful – C2
Command
rejected
– C0 1
2 Len 01 01
3 Type 94 94
4 Index 00 00
5 Data 1 (Low Byte) 00 J Table 12
6 Data 2 (High Byte) 00 J Table 12
7 – 8 Data 3 – 4 00 00
1) Possible causes J page 91
Data 1 Bit 7 6 5 4 3 2 1 0
D1 0/1
D2 0/1
... ...
D8 0/1
Data 2 Bit 7 6 5 4 3 2 1 0
D9 0/1
D10 0/1
... ...
D16 0/1