Omron V640 User Manual page 44

SECTION 2
Installation and Connections/Wiring
• Wiring for connection to a PC/AT computer
Socket type #4-40
Name
NC
RD
SD
NC
SG
NC
RS
CS
NC
If the CS function is to be used at the PC/AT computer side, a return wire is required.
Socket type #4-40
Name
NC
RD
SD
NC
SG
NC
RS
CS
NC
RS signal control method at the host device
In a 1:N system using Link Units, the RS signals generated from the host device by normal control must be input as CS
signals. Turn the RS signals OFF within 15 ms after the completion of data transmission. Correct communications will
not be possible without this control.
RS at host device
SD at host device
CIDRW System
40
User's Manual
Link unit
V700-L11
D-SUB, 9-pin
Pin No.
1
2
3
4
5
6
7
8
9
Ground shielded wires at the PC/AT computer side.
Link unit
V700-L11
D-SUB, 9-pin
Pin No.
1
2
3
4
5
6
7
8
9
Ground shielded wires at the PC/AT computer side.
ON only during data transmission from the host device
PC/AT Computer
D-SUB, 9-pin
Socket type #4-40
Pin No.
1
2
3
4
5
6
7
8
9
PC/AT Computer
D-SUB, 9-pin
Socket type #4-40
Pin No.
1
2
3
4
5
6
7
8
9
Within 15 ms
Name
NC
RD
SD
NC
SG
NC
RS
CS
NC
Name
NC
RD
SD
NC
SG
NC
RS
CS
NC