Appendix B
Specifications
117
RS-232C Port Specifications
RS-232C Specifications
The specifications for the RS-232C port are given below. Devices that meet
these specifications can be connected.
Connector Pin Assignments
Pin assignments for the RS-232C port are given in the following table.
Pin
Abbreviation
Name
Direction
1
FG
Field ground
---
2
SD (TXD)
Send data
Output
3
RD (RXD)
Receive data
Input
4
RS (RTS)
Request to send
Output
5
CS (CTS)
Clear to send
Input
6
5V
Power supply
---
7
DR (DSR)
Data set ready
Input
8
ER (DTR)
Data terminal ready
Output
9
SG
Signal ground
---
Connector fitting
FG
Field ground
---
Connections
The connections between the C200HX/C200HG/C200HE and a personal com-
puter are illustrated below as an example.
1
2
3
4
5
6
FG
SD
RD
RS
CS
5V
DR
ER
SG
7
8
9
1
2
3
4
5
6
7
8
9
SD
RD
RS
CS
DR
SG
CI
9
ER
C200HE/C200HG/C200HX
Personal Computer
Signal
Pin
No.
Signal
Pin
No.
Shielded cable
CD
Applicable Connectors
The following connectors are applicable. One plug and one hood are included
with the CPU Unit.
Plug:
XM2S-0901 (OMRON) or equivalent
Hood:
XM2S-0911 (OMRON) or equivalent
Port Specifications
Item
Specification
Communications method
Half duplex
Sync
Start-stop
Baud rate
1,200, 2,400, 4,800, 9,600, or 19,200 bps
Transmission method
Point to point
Transmission distance
15 m max.
Interface
EIA RS-232C
5
1
9
6
