Cable Wiring - Omron CJ Series Connection Manual

6.2. Cable Wiring

Refer to SECTION 3 Installation and Wiring of the CJ Series Serial Communications Units
OPERATION MANUAL (Cat. No. W336) for details on cable wiring.
Check connector configuration and pin assignments before wiring.
■Connector configuration and 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.
Oriental Motor BLED3AM-R (CN7/CN8) applicable connector: RJ-45
Pin No. Symbol
1 N.C.
2 GND
3 TR+
4 N.C.
5 N.C.
6 TR-
7 N.C.
8 N.C.
■Cable/Pin assignments
Serial Communications Unit
(CJ1W-SCU42)
RS-422A/ Signal
485 name
interface
RDA-
RDB+
SDA-
SDB+
FG
Terminal block connector
Symbol Signal name
RDA Receive data -
RDB Receive data +
SDA Send data -
SDB Send data +
FG Shield
Description
Not used
GND
RS-485 communication signal (+)
Not used
Not used
RS-485 communication signal (-)
Not used
Not used
Pin No.
1
2
3
4
5
6．Serial Communications Settings
Input/Output
Input
Input
Output
Output
-
Driver
(BLED3AM-R)
Pin No. Signal
name
1 -
2 GND
3 TR+
4 -
5 -
6 TR-
7 -
8 -
RJ-45 connector
RS-485
interface
9