SMC Networks HECR Series Communications Manual

MODBUS communication function
5-5 HECR
5.5 Message configuration
5.5.1 Message format
The message configuration is shown below. This product communicates in ASCII mode. ASCII
mode is used from Start to End.
1)
2)
3)
4)
5)
6)
Start
Slave Address
Function
Data
LRC
End
[:]
XX
XX
XX
XX
XX
～
XX
XX
XX
[CR]
[LF]
1) Start
The start of the message. [:] (3AH)
2) Slave Address (=Unit number) (01H to 0FH 3031 to 3046)
This is a number to identify this product. “1" is the default setting. This can be changed by
the operation display panel.
3) Function (Refer to ‘’5.6 Function codes’’.)
Command is assigned.
4) Data
Depending on the function, the address and the number of the register, the value of
reading/writing are assigned.
5) LRC
LRC method
Refer to ‘’5.7 LRC’’.
6) END
The end of the message. [CR] (0DH) + [LF] (0AH)
A response message will not be returned unless the request includes [:] and [CR] [LF].
This product clears all previously received code when [:] is received.

SMC Networks HECR Series Specifications

General

Brand	SMC Networks
Model	HECR Series
Category	Chiller
Language	English