SMC Networks HRS018-A 20 R Series - Page 150

HRX-OM-W058
Chapter 9 Documents
9.1 Specifications List HRS-R Series
9-4
 Serial communication
Table 9-4 Specifications List
Item
Specification
Connector type (for this product)
D-sub9 pin Female connector(Mounting screw: M2.6×0.45)
Protocol
Modicon Modbus standard / Simple communicationprotocol
Standard
EIA RS-485
EIA RS-232C
Circuit structure diagram
 Connector location
Fig 9.1-1 Rear side
1
5
9
internal circuit
This product Your system
SD+
SG
SD-
2
3
5
internal circuit
This product Your system
RD
SD
SG
Option connector 2
Option connector 1
Contact I/O
communication connector
Maintenance connector
Serial communication
(RS-485/RS-232C) connector
Option connector 2
Option connector 1
Contact I/O
communication connector
Serial communication
(RS-485/RS-232C) connector
For option B