Eaton EASY222-DN, Руководство пользователя

Страница: 251 / 284

Read/write function block data
247
09/10 MN05013007Z-EN
Value limitation: VC01 – VC32
Telegram structure
Table 163: Operand overview
1) Value transferred in Intel format: Data 1 contains Low byte,
Data 4 contains High byte
2) The value can only be written if it is assigned to a constant in
the program.
Byte Meaning Value (hex), sent by
Master Slave Master Slave
Attribute ID Read 92 –
Response: B2 –
0 Response:
Read successful – C2
Write successful – C1
Command rejected – C0
0 1 Part no. 34 34
1 2 Instance 01 - 20 01 - 20
2 3 Index 00 - 04 00 - 04
3 - 6 4 - 7 Data 1 - 4 Read operation 00 depending on index,
a
table 163, 164
Date 1 - 4 Write operation depending on index,
a
table 163, 164
00
Index
(hex) Data Data 1
Data 3 Data 2
Data 4 Read/
Write
0 Bit IO a table 164 – R
2 Input value I1 for table of TB… ST
1
R/W
2)
3 Output value QV from table of TB… ST
1
R
4 Number of entries QN in table of TB… ST
1
R