Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 108)

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EZ800/EZD Control Commands
MN05013001E 104
Example
A voltage signal is present at analog input 1. The required
telegrams for reading the analog value are as follows:
Byte 5 – Data 1 (Low Byte): D9
hex
Byte 6 – Data 2 (High Byte): 02
hex
J corresponding 16-bit value: 02D9
hex
= 729 (7.29 V)
Byte Meaning Value (hex), sent by
Master Slave
0 Toggle byte 81 80
1 Command: Read 91 –
Response: Read
successful
– C2
2 Len 02 02
3 Type 02 02
4 Index 01 1 01 1
5 Data 1 00 D9
6 Data 2 00 02
7 Data 3 00 00
8 Data 4 00 00
1) 01 = Analog input 1