Eaton EASY222-DN, Руководство пользователя

Страница: 115 / 284

Read/write image data
111
09/10 MN05013007Z-EN
Example:
A voltage signal is present at analog input 1. The required
telegrams for reading the analog value are as follows:
Table 47: Example telegram for reading the value at the analog
input “1”
Byte 4 – Data 1 (Low Byte): 4B
hex
Byte 5 – Data 2 (High Byte): 03
hex
l corresponding 16-bit value: 034B
hex
= 843
The value 843 corresponds to the 10 bit value of the analog
converter. The following conversion is required for the actual
analog value:
Byte Meaning Value (hex), sent by
Master Slave Master Slave
Attribute ID: Read 88 –
0 Response: read
successful
– C2
0 1 Len 02 02
1 2 Part no. 8C 8C
2 3 Index 02
1)
02
1)
3 4 Data 1 00 4B
4 5 Data 2 00 03
5 6 Data 3 00 00
6 7 Data 4 00 00
1) 02 = Analog input I11
10 V
x 10 bit =>
10 V
x 843 = 8.24 V
1023 1023