Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 65)

Read/write image data
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Table 15: Byte 5 to 6: Data 1 to 2
Example:
The N markers are read:
The markers N3, N11 and N16 are set.
Data 1 Bit 7 6 5 4 3 2 1 0
M N
M1 N1 0/1
M2 N2 0/1
... ... ...
M8 N8 0/1
Data 2 Bit 7 6 5 4 3 2 1 0
M9 N9 0/1
M10 N10 0/1
... – ...
M16 N16 0/1
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
N marker 87 87
4 Index 00 00
5 Data 1 (Low Byte) 00 04
6 Data 2 (Low Byte) 00 84
7 – 8 Data 3 – 4 00 00
1) Possible causes J page 91