SMC Networks HECR Series Communications Manual

MODBUS communication function
5-9 HECR
5.8.2 Function code：06H Writing registers
Write data to assigned address.
◼ Request message <Normal> (Master to Slave)
Start
Slave Address
Function
Data
LRC
End
[:]
XX
XX
[0]
[6]
XX
XX
[CR]
[LF]
Write Address
Write Data
Hi
Lo
Hi
Lo
XX
XX
XX
XX
XX
XX
XX
XX
◼ Response message <Normal> (Slave to Master)
Start
Slave Address
Function
Data
LRC
End
[:]
XX
XX
[0]
[6]
XX
XX
[CR]
[LF]
Write Address
Write Data
Hi
Lo
Hi
Lo
XX
XX
XX
XX
XX
XX
XX
XX
◼ Communication example
1) Slave Address (=Unit number): No 1
2) Write data to register 0050H
(Commands to run)
Request message
Response message
Code
Contents
Code
Contents
01
Slave Address
01
Slave Address
06
Function
06
Function
0050
Address of specified register
0050
Address of register to write
0001
Information written to 0050H (Stop flag)
0001
Information of register to write
A8
LRC
A8
LRC
This product
(Request):010600500001A8 [CR][LF]
(Response):010600500001A8 [CR][LF]
Your system
Data is sent and
received in ASCII
code.

SMC Networks HECR Series Specifications

General

Brand	SMC Networks
Model	HECR Series
Category	Chiller
Language	English