Omron CQM1H-SCB41 Operation Manual page 57

Connections
42
1:1 Connections Using RS-422A/485 Ports
Computer
Signal
Shield
FG
SD
RD
RS-232C
RTS
Interface
CTS
DSR
DTR
SG
5-V (+)
power ( )
NT-AL001-E Link Adapter
Pin Pin
Signal Signal
NC
SD
RD
RTS
CTS
5V
DSR
DTR
SG
D-sub, 9-pin Terminal block
connector (male)
DIP Switch Settings
Pin 1: ON
Pin 2: ON
(terminating resistance)
Pin 3: OFF
Pin 4: OFF
Pin 5: OFF
Pin 6: OFF
Section 4-3
Serial Communications
Board
Signal
Pin
RS-422A
/ 485 In-
terface
Hood
Terminating resistance ON
4-wire