Omron EJ1 User Manual page 143

Programless Communications
Note
118
• RS-232C
SYSMAC
CJ/CS Series
RS-232C
Pin
Signal
No.
2 SD
3 RD
4 RS
5 CS
9 SG
Shell FG
• RS-485
SYSMAC
CJ/CS Series
RS-485
Pin
Signal
No.
1 RDA
2 RDB+
6 SDA
8 SDB+
Shell FG
• Attach terminating resistance (110 to 125
port B if there are problems with communications noise resistance.
Refer to Related Manuals on page xiv for the operating methods for SYSMAC
CS/CJ-series CPU Units and Serial Communications Boards/Units.
Shield
Turn ON pin 8 of SW2
Shield
B(+)
RS-485
A( )
) to pins 6 and 7 on the EDU
Section 5-1
EJ1N-HFU@-NFLK
B1
A1
B2
A2
B3
A3
B4
A4
B5
A5
B6
A6
B7
SD
A7
B8
RD
A8 RS-232C
B9
SG
A9
to set RS-232C.
EJ1N-HFU@-NFLK
B1
A1
B2
A2
B3
A3
B4
A4
B5
A5
B6
A6
B7
A7
B8
A8
B9
A9