![background image](http://html1.mh-extra.com/html/omron/f250/f250_setup-manual_741266048.webp)
44
SECTIO
N
4
Co
nn
ecting
thro
ug
h the
Se
rial Inter
face
F250
Setup Manual
SECTION 4
Connecting External Devices
1:1 Connection (Host Link)
Connector
The Controller's RS-232C/RS-422 Connector is a 9-pin D-SUB female connector.
The pin allocation is shown below.
A parallel I/O cable can be assembled using the following connector and cover or equivalent
components.
Pin
Signal
Function
1
FG
Protective frame ground
2
SD
For RS-232C
3
RD
For RS-232C
4
NC
Not connected
5
RDB(+)
For RS-422
6
RDA(-)
For RS-422
7
SDB(+)
For RS-422
8
SDA(-)
For RS-422
9
GND
Signal ground
Recommended Model
Manufacturer
Item
Plug
OMRON Corporation
XM2A-0901
Hood
OMRON Corporation
XM2S-0911
PLC
RS-232C cable
Controller