Sanken SVCO6, Инструкция по эксплуатации, Страница: 265 / 326

- 263 -
-
263
-
C
h
ap
ter
7
7-4 Serial Communication Function
Item Name Content
①
HD Start code Message transmission start code(―*‖
：
ASCII code 2AH)
②③
IN Inverter No.
Inverter number. Data format: 2 bytes fixed
The inverter number is set by function code F4006
Example: Inverter number 20
② →―2‖, ③ →―0‖
④
OP Command code
Inverter command code
⑤
DT Data
Example: Function code data read/write contents
1
）
Function code number section (Data length: 4 bytes fixed)
Example: code number F2103
(1)→―2‖ (2)→―1‖ (3)→―0‖ (4)→―3‖
2
）
Function code data section (Data format: 5 bytes fixed)
Example: code data 123
(5)→―0‖ (6)→―0‖ (7)→―1‖ (8)→―2‖ (9)→―3‖
Code number Code data
◎
The data length and format are determined by each command. For details, please refer
to Details of message formation.
⑥
SUM Checksum
Obtain the 2‘s complement of the lowest byte of the binary sum of data
①
-
⑤
. Change bit
7 to 0 and bit 6 to 1. (See reference 1.)
⑦⑧
or
⑦
EM End code
The code to end data transmission. Please determine it according to function code F4010.
ASCII code 0DH(―CR‖)
and 0AH(―LF‖) or 0DH(―CR‖)
Reference 1: As an example of checksum calculation for ASCII format, set the function code F2101 of the first inverter
to 50.00Hz.
Item Name Content
①
Start code *
⑪
2AH ―*‖
②
③
Inverter No. 01
⑫
30H ―0‖
⑬
31H ―1‖
④
Command code N
⑭
4EH ―N‖
⑤
Data
Function code number
F2101
⑮
32H ―2‖
⑯
31H ―1‖
⑰
30H ―0‖
⑱
31H ―1‖
Function code data
50.00 Hz
※
⑲
30H ―0‖
⑳
35H ―5‖
⑴
30H ―0‖
⑵
30H ―0‖
⑶
30H ―0‖
Sum of ASCII codes
⑪
-
⑶
292H Lower byte: 92H
2‘s complement of the lower byte of the sum 6EH
⑥
Change bit 7 to 0 and change bit 6 to 1.
6EH=01101110B→01101110B=6EH
Checksum: 6EH
※
Frequency data consists of a 3-digit integer part and a 2-digit decimal part.