Sanken SVCO6, Инструкция по эксплуатации, Страница: 283 / 326

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7
7-4 Serial Communication Function
The followings are examples of messages (computer → inverter, inverter → computer (normal & abnormal response)).
1) Message from computer to inverter (RTU)
Item Name Description
①
IN Inverter number 0: broadcast mode
1-247: termination inverter number
Data format is fixed as 1byte
Inverter number, the data set by function code F4006
Example: inverter number 2
①
→‗02‘
②
OP Command code Command code (1byte fixed)(03H, 06H, 10H)
③
DT Data
Example
①
: Data content read from register(03H)
1
）
Register number (2-byte fixed)
Example: register number 07D0H
⑪ →‗07‘ ⑫ →‗D0‘
2
）
Number of registers (2-byte fixed)
Example: two registers
⑬
→‗00‘
⑭
→‗02‘
·Data(DT) (4byte)
(1) (2) (3) (4)
Example
②
The contents of data when writing data in one register (06H)
1) Register number (2-byte fixed)
Example: register number 03E8H
⑪
→‗03‘
⑫
→‗E8‘
2) Data content (2-byte fixed)
Example: Setting register 0001H
(3)→‗00‘ (4)→‗01‘
·Data(DT) (4byte)
(1) (2) (3) (4)
Example
③
Data content written into the register (10H)
1
）
Register number (2-byte fixed)
Example: register number 03E8H
⑪ →‗03‘ ⑫ →‗E8‘
2
）
Setting of number of registers (2-byte fixed)
Example: setting register
⑬ →‗00‘ ⑭ →‗01‘
3
）
Number of data (1-byte fixed)
Example: setting data
⑮
→‗02‘
4
）
Data content (variable, byte = number of data (5))
Example: Setting register 0001H
⑯ →‗00‘ ⑰ →‗01‘
·Data(DT) (7byte)
(1) (2) (3) (4) (5) (6) (7)
④
SUM Checksum CRC check (2 byte fixed)