Interface Connection (V680-Ca2D) - Omron V680-CA1D User Manual

RS-485 Interface Connection
Pin No.
• 1:N Connection
Host device
Terminating re-
sistance of 220 Ω
provided
Correct Use
Send the following commands from the host device after confirming the response from the Controller.
When using an RS-232C/485 Adapter at the host device, make sure that sending is completely
enabled before sending the command. After the command is completely sent, change to receiving
mode within 5 ms. Otherwise, communications with the Controller may not be possible.
Host device
V680-CA2D
Pin No. 1
Polarity +
* Pin numbers 1 and 3, and 2 and 4 are
internally short-circuited in the connector.
5 ms
Command frame
Response frame
Installation, Connections, and Wiring
(V680-CA2D)
2 3 4
− −
+
RS-485 Controller 0
Terminating resist-
ance of 220 Ω not
provided
RS-485 Controller 1
Terminating resist-
ance of 220 Ω not
provided
RS-485 Controller 30
Terminating resist-
ance of 220 Ω pro-
vided
Command frame
Heat-resistive RFID System
Section 2
33
User's Manual