SMC Networks HRR Series, Manual

Page: 19 / 31

Communication Functions
Serial Communication
Item Specifications
Connector type D-sub 9-pin female connector
Standards EIA Standards, RS-485 (ASCII mode/RTU mode)
Circuit diagram
Standards EIA Standards, RS-232C
Circuit diagram
Master
Terminal
resistance
Terminal resistance
120
Ω
This product
(1st slave)
This product
(31st slave)
SD+ SD− SG
1
SD+
9
SD−
5
SG
1
SD+
9
SD−
5
SG
Master
RD
2
SD
3
SG
5
This product
RD
2
SD
3
SG
5
D-sub 9-pin female (socket) type
Communication connector
5 1
9 6
Run/Stop
Circulating fluid temperature setting
Writing
Circulating fluid discharge temperature
Circulating fluid flow rate
Circulating fluid discharge pressure
Electric conductivity
∗
1
Status information
Alarm occurrence information
Readout
∗
1 When using the
Option DM
The serial communication (RS-485/RS-232C) enables the following items to be written and read out.
For details, refer to the “Operation Manual”
on the website, www.smc.eu
18
Thermo-chiller/Rack Mount Type
HRR
Series