Omron V680-CA5D01-V2 User Manual page 42

Connections between ID Controllers (1:N)
RS-232C Connection to the Host Device
SW 6: ON
(terminating
resistance)
RS-232C
Host device
ID Controller
Max. length: 15 m
Pin No. Symbol
1
2
3
4
5
SW 6: ON
(terminating
resistance)
RS-232C
Host device
ID Controller
Max. length: 15 m
Pin No. Symbol
1
2
3
4
5
Note: Short-circuit terminals 1 and 3, and 2 and 4 to use RS-485 communication.
Refer to Connections to Host Device for information on RS-232C connections between the host device and ID Control-
lers.
p. 34
If the first communications received by an ID Controller are via the RS-232C interface, reception of RS-422/RS-485
communications will be prohibited. If the first communications are received via RS-422/RS-485, reception of RS-232C
communications will be prohibited. Therefore, when changing the system configuration of an ID Controller, always turn
OFF the power supply before changing the connections.
SW 6: OFF
(no terminating
resistance)
RS-422
ID Controller
Total length: 500 m max.
Pin No. Symbol
RDA(−) 1 RDA(−)
RDB(+) 2 RDB(+)
SDA(−) 3 SDA(−)
SDB(+) 4 SDB(+)
SG 5 SG
SW 6: OFF
(no terminating
resistance)
RS-485
ID Controller
Total length: 500 m max.
Pin No. Symbol
RDA(−) 1 RDA(−)
RDB(+) 2 RDB(+)
SDA(−) 3 SDA(−)
SDB(+) 4 SDB(+)
SG 5 SG
Installation, Connections, and Wiring
SW 6: OFF
(no terminating
resistance)
RS-422 RS-422
ID Controller
Pin No. Symbol
1 RDA(−)
2 RDB(+)
3 SDA(−)
4 SDB(+)
5 SG
SW 6: OFF
(no terminating
resistance)
RS-485 RS-485
ID Controller
Pin No. Symbol
1 RDA(−)
2 RDB(+)
3 SDA(−)
4 SDB(+)
5 SG
SECTION 2
SW 6: ON
(terminating
resistance)
ID Controller
Pin No. Symbol
1 RDA(−)
2 RDB(+)
3 SDA(−)
4 SDB(+)
5 SG
SW 6: ON
(terminating
resistance)
ID Controller
Pin No. Symbol
1 RDA(−)
2 RDB(+)
3 SDA(−)
4 SDB(+)
5 SG
RFID System
39
User's Manual