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CJ1W-SCU

CJ-series Serial Communications Units

CJ1W-SCU

The Serial Communications Units That Enable High-speed Connections with External Devices. This unit is available for CJ/NJ controller.

International Standards

  • The standards are abbreviated as follows: U: UL, U1: UL(Class I Division 2 Products for Hazardous Locations), C: CSA, UC: cULus, UC1: cULus (Class I Division 2 Products for Hazardous Locations), CU: cUL, N: NK, L: Lloyd, and CE: EC Directives.
  • Contact your OMRON representative for further details and applicable conditions for these standards.

Unit
type
Product
name
Specifications No. of
unit
numbers
allocated
Current
consump-
tion (A)
Model Stand-
ards
Commu-
nications
Interface
Communications
functions
5V 24V
CJ1
CPU
Bus
Units
Serial
Communi-
cations Units
(High-speed
type)
1651_lu_1_1
2 RS-232C
ports
The following functions
can be selected for each
port with an CJ-system:
Protocol macro
Host Link
NT Links (1:N mode)
Serial Gateway
No-protocol *3
Modbus-RTU Slave

The following functions
can be selected for each
port with an NJ-system:
Protocol macro
Serial Gateway
No-protocol
Modbus-RTU Slave
1 0.28
*1
- CJ1W-SCU22 *2 UC1, N,
L, CE
2 RS-422A/
485 ports
0.4 - CJ1W-SCU32 *2
1 RS-232C
port and
1 RS-422A/
485 port
0.36
*1
- CJ1W-SCU42 *2
CJ1
CPU
Bus
Units
Serial
Communi-
cations Units
1651_lu_1_2
2 RS-232C
ports
The following functions
can be selected for each
port:
Protocol macro *4
Host Link
NT Links (1:N mode)
Serial Gateway *5
No-protocol *6
Modbus-RTU Slave *7
1 0.28
*1
- CJ1W-SCU21-V1
*8
UC1, N,
L, CE
2 RS-422A/
485 ports
0.38 - CJ1W-SCU31-V1
*8
1 RS-232C
port and
1 RS-422A/
485 port
0.38
*1
- CJ1W-SCU41-V1
*8

*1. When an NT-AL001 RS-232C/RS-422A Conversion Unit is used, this value increases by 0.15 A/Unit.
*2. Sinple Backup Function and Interrupt notification function cannot be used with an NJ-system.
*3. A Serial Communications Unit with unit version 2.1 or later, a CPU Unit with unit version 1.03 orlater, and Sysmac
       Studio version 1.04 or higher are required to use the SerialRcvNoClear instruction.
*4. You can activate Protocol macro trace function when the CPU Unit is set to the RUN/MONITOR mode. (MONITOR
       mode is not available with the NJ-series CPU Units.)
*5. The Serial Gateway function is enabled only for Serial Communications Units of unit version 1.2 and later.
*6. The no-protocol function is enabled only for Serial Communications Units of unit version 1.2 and later (and a CPU Unit
       of unit version 3.0 or later is also required).
*7. The Modbus-RTU Slave function is enabled only for Serial Communications Units of unit version 1.3 and later.
*8. This unit cannot be used, with the Machine Automation Controller NJ-series.

Accessories

Model Accessories Specifications
CJ1W-SCU32 2 Serial Port (RS-422A/485)
Connector
Terminal Block Connector (FMC1.5/5-STF-3.5AU by Phoenix Contact)
CJ1W-SCU42 1 Serial Port (RS-422A/485)
Connector
Terminal Block Connector (FMC1.5/5-STF-3.5AU by Phoenix Contact)

Note: A serial port (RS-232C) connector is not provided. Purchase a connector separately for serial port connection.
         Plug : XM3A-0921 (manufactured by OMRON) or equivalent
         Hood : XM2S-0911-E (manufactured by OMRON) or equivalent