Nor-Cal SDC15 Controller - Manual (Page 183)

8-9
■ Write command (10H)
● Send Message
This is a command capable of writing the contents of continuous data addresses
from a specified write start data address with a single message. The following is
an example of send message while writing data:
(Example) Writing 01A0H and 0E53H in the continuous data addresses
consisting of 2 words following 1501W (05DDH).
MODBUS ASCII
(1) Start of message
(2) Station address
(3) Write command 10H
(4) Write start word address 1
(5) Write data count
(6) Write data count X 2
(7) Write data 1
(8) Write data 2
(9) Checksum
(10) CR
(11) LF
MODBUS RTU
(1) Station address
(2) Write command 10H
(3) Write start word address 1
(4) Write data count
(5) Write data count x 2
(6) Write data 1
(7) Write data 2
(8) Checksum
Chapter 8. MODBUS COMMUNICATIONS FUNCTIONS
(2) (1) (3) (4) (5) (6)
(7) (8) (9) (10) (11)
3AH
:
30H
0
31H
1
31H
1
30H
0
30H
0
35H
5
44H
D
44H
D
30H
0
30H
0
30H
0
32H
2
30H
0
34H
4
30H
0
31H
1
30H
0
30H
0
45H
E
35H
5
33H
3
30H
0
35H
5
0DH
CR
41H
A
0AH
LF
(3) (4)
01H
(1)
10H
(2)
05H DDH 00H 02H 04H
(5)
01H A0H 0EH 53H 45H B9H
(6) (7) (8)