Omron CQM1H-SCB41 Operation Manual page 89

Connections
1:1 Connections Using RS422A/485 Ports
Serial Communications Board
Signal
RS-422A
/485 in-
terface
D-sub, 9-pin
connector (male)
Serial Communications Board
Signal
RS-422A
/485 in-
terface
D-sub, 9-pin
connector (male)
Terminating resistance ON
4-wire
74
Device supporting
RS-422A/485
communications
(2-wire)
Pin
Shield Signal RS-422A
/485 in-
terface
Hood
NT-AL001-E Link Adapter
RS-422A
Pin
Shield
Pin
Signal
Hood
Terminal block
DIP Switch Settings
Pin 1: ON
Pin 2: ON
(terminating resistance)
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: OFF
Serial Communications Board
Pin
Signal
RS-422A
/485 in-
terface
Hood
D-sub, 9-pin
connector (male)
Computer
Pin
Signal Signal
RS-232C
FG
NC
SD SD
RS-232C
RD
RD
Interface
RTS
RTS
CTS
CTS
5V
DSR DSR
DTR
DTR
SG
SG
D-sub, 9-pin
D-sub, 9-pin
connector (male)
connector
5-V (+)
(male)
power ( )
Section 5-4
Device supporting
RS-422A/485
communications
(4-wire)
Shield Signal
RS-422A
/485 in-
terface