Cable Wiring Diagram - Omron CJ Series Connection Manual

6.2. Cable Wiring Diagram

Refer to SECTION 3 Installation and Wiring of the CJ Series Serial Communications Units
OPERATION MANUAL (Cat. No. W336) for details on cable wirings.
Check connector configurations and signal lines (pin assignments) before wiring.
■Connector configurations and signal lines (pin assignments)
CJ1W-SCU42 Serial Communications Unit applicable connector: Terminal block
Pin No.
1(See note 1.)
2(See Note 1.)
3(See Note 1.)
4(See Note 1.)
5(See Note 2.)
Note 1: For 2-wire connection, use either pins 1 and 2 or pins 3 and 4.
Note 2: Pin 5 (Shield) is connected to the GR terminal on Power Supply Unit though Serial
Communications Unit. The cable shield can thus be grounded by grounding the GR
terminal of Power Supply Unit.
Inverter (3G3MX2-A[][][][]-V1) applicable connector: Terminal block
Control Circuit Terminal
■Cable/Pin assignments
Serial Communications Unit
(CJ1W-SCU42).
RS-422A/ Signal
485 name
interface
RDA-
RDB+
SDA-
SDB+
FG
Terminal block
Symbol Signal name
RDA Receive data -
RDB Receive data +
SDA Send data -
SDB Send data +
FG Shield
Pin No.
1
Terminating resistor
2
3
4
5
6．Serial Communications Settings
Input/Output
Input
Input
Output
Output
-
Inverter (3G3MX2-A[][][][]-V1)
Terminal Signal
block name
A1 RS-
B1 RS+
Terminal block
RS-485
interface
9