CJ1W-PRM21

Omron

Omron CJ1W-PRM21 CJ1 Series PROFIBUS Master Unit

SKU CJ1W-PRM21

Disponibile
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Omron
  • Product No.: CJ1W-PRM21
  • Origin Japan
  • Product Type: PROFIBUS Master Units
  • Payment: T/T, Western Union
  • Weight: 0.1 kg
  • Dimensions: 3.1 x 9.0 x 6.5 cm
  • Shipping port: Xiamen
  • Warranty: 12 months

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CJ1 Series PROFIBUS Master Units
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Product Description

Description

Integrating PROFIBUS DP fieldbus networks into Omron PLCs is simplified with the CJ1W-PRM21 CPU Bus Unit. Designed for high-speed decentralized control, this module acts as a PROFIBUS DP-V1 Class 1 and Class 2 Master, enabling seamless data exchange between the host controller and decentralized field devices. This module mounts directly onto a CJ-series CPU Rack or Expansion Rack, and is also fully compatible with NJ-series Controller Units. Utilizing standard RS-485 physical layer communication with galvanic isolation, it ensures reliable signal integrity in challenging industrial environments.

Features

  • Supports both PROFIBUS DP and DP-V1 protocols (Class 1 and Class 2 Master functionality).
  • Configurable node address range from 0 to 125 using network configuration software.
  • Physical interface features a galvanically isolated RS-485 port with a standard 9-pin sub-D female connector.
  • Accommodates up to 16 master units per NJ-series controller system.
  • Rotary switches on the front panel allow hardware assignment of CPU Bus Unit numbers from 0 to F Hex.

Applications

  • Automated manufacturing and assembly lines.
  • Process control and packaging systems.
  • Water and wastewater management infrastructure.
  • Integration of multi-vendor field devices into Sysmac CJ1/NJ control architectures.

Technical Specifications

Parameter Specification
Manufacturer Omron
Model / Part Number CJ1W-PRM21
Unit Classification CPU Bus Unit
Unit Version 3.0
Compatible Mounting Positions CPU Rack, Expansion Rack
Applicable Unit Numbers 0 to F (Hex)
Maximum Units per NJ-series Controller 16
Current Consumption 400 mA max at 5 VDC
Applicable Standards EN50170, Volume 2
Protocol Support PROFIBUS DP, PROFIBUS DP-V1
Unit Types PROFIBUS DP-V1 Class 1 and Class 2 Master
Media Type RS-485, galvanically isolated from the CPU
Connector Type 9-pin sub-D female connector (#4/40 UNC thread)
Termination According to EN50170, provided by the cable connector
Unit Device Address Range 0 to 125 (set via configurator)
Maximum Slave Devices 125 (address range 0 to 125)
Dimensions (W x H x D) 3.1 x 9.0 x 6.5 cm
Weight 0.10 kg

Connections and Interfaces

Interface Port Connection Details
PROFIBUS Port 9-pin Sub-D female connector with #4/40 UNC retention threads
Unit Address Switches Two rotary switches on the front panel for assigning hex addresses 0 to F

Installation Guidelines

  • Turn off the system power supply before mounting or removing the CPU Bus Unit.
  • Set the CPU Bus Unit number rotary switch to a unique value (0 to F Hex) before installation.
  • Ensure the module is securely locked into position on the CPU Rack or Expansion Rack.
  • Use only PROFIBUS-compliant shielded twisted-pair cables conforming to EN50170 Volume 2.
  • Ensure termination resistors are correctly engaged at the physical endpoints of the PROFIBUS network segment.
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
What is the maximum number of slave devices supported by the CJ1W-PRM21?
The CJ1W-PRM21 supports up to 125 PROFIBUS slave devices within an address range of 0 to 125.
Is the CJ1W-PRM21 compatible with Omron NJ-series controllers?
Yes, this module is compatible with NJ-series Controller Units, allowing for up to 16 master units per controller.
What is the power consumption of the module?
The unit has a current consumption of 400 mA maximum at 5 VDC.
Does the module feature galvanic isolation?
Yes, the RS-485 interface on the CJ1W-PRM21 is galvanically isolated from the controller CPU.
Reviews

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CJ1W-PRM21

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Omron CJ1W-PRM21 CJ1 Series PROFIBUS Master Unit

Only 2 item(s) left in stock

  • Manufacturer: Omron

  • Product No.: CJ1W-PRM21

  • Country of origin:Japan

  • Product Type: PROFIBUS Master Units

  • Payment: T/T, Western Union

  • Weight: 100g

  • Dimensions: 3.1 x 9.0 x 6.5 cm

  • Shipping port: Xiamen

  • Warranty: 12 months

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Product Description
FAQ
Shipping Returns
Additional details
Reviews

Description

Integrating PROFIBUS DP fieldbus networks into Omron PLCs is simplified with the CJ1W-PRM21 CPU Bus Unit. Designed for high-speed decentralized control, this module acts as a PROFIBUS DP-V1 Class 1 and Class 2 Master, enabling seamless data exchange between the host controller and decentralized field devices. This module mounts directly onto a CJ-series CPU Rack or Expansion Rack, and is also fully compatible with NJ-series Controller Units. Utilizing standard RS-485 physical layer communication with galvanic isolation, it ensures reliable signal integrity in challenging industrial environments.

Features

  • Supports both PROFIBUS DP and DP-V1 protocols (Class 1 and Class 2 Master functionality).
  • Configurable node address range from 0 to 125 using network configuration software.
  • Physical interface features a galvanically isolated RS-485 port with a standard 9-pin sub-D female connector.
  • Accommodates up to 16 master units per NJ-series controller system.
  • Rotary switches on the front panel allow hardware assignment of CPU Bus Unit numbers from 0 to F Hex.

Applications

  • Automated manufacturing and assembly lines.
  • Process control and packaging systems.
  • Water and wastewater management infrastructure.
  • Integration of multi-vendor field devices into Sysmac CJ1/NJ control architectures.

Technical Specifications

Parameter Specification
Manufacturer Omron
Model / Part Number CJ1W-PRM21
Unit Classification CPU Bus Unit
Unit Version 3.0
Compatible Mounting Positions CPU Rack, Expansion Rack
Applicable Unit Numbers 0 to F (Hex)
Maximum Units per NJ-series Controller 16
Current Consumption 400 mA max at 5 VDC
Applicable Standards EN50170, Volume 2
Protocol Support PROFIBUS DP, PROFIBUS DP-V1
Unit Types PROFIBUS DP-V1 Class 1 and Class 2 Master
Media Type RS-485, galvanically isolated from the CPU
Connector Type 9-pin sub-D female connector (#4/40 UNC thread)
Termination According to EN50170, provided by the cable connector
Unit Device Address Range 0 to 125 (set via configurator)
Maximum Slave Devices 125 (address range 0 to 125)
Dimensions (W x H x D) 3.1 x 9.0 x 6.5 cm
Weight 0.10 kg

Connections and Interfaces

Interface Port Connection Details
PROFIBUS Port 9-pin Sub-D female connector with #4/40 UNC retention threads
Unit Address Switches Two rotary switches on the front panel for assigning hex addresses 0 to F

Installation Guidelines

  • Turn off the system power supply before mounting or removing the CPU Bus Unit.
  • Set the CPU Bus Unit number rotary switch to a unique value (0 to F Hex) before installation.
  • Ensure the module is securely locked into position on the CPU Rack or Expansion Rack.
  • Use only PROFIBUS-compliant shielded twisted-pair cables conforming to EN50170 Volume 2.
  • Ensure termination resistors are correctly engaged at the physical endpoints of the PROFIBUS network segment.
Key Features:
#CJ1 Series #PROFIBUS Master Units

What is the maximum number of slave devices supported by the CJ1W-PRM21?
The CJ1W-PRM21 supports up to 125 PROFIBUS slave devices within an address range of 0 to 125.

Is the CJ1W-PRM21 compatible with Omron NJ-series controllers?
Yes, this module is compatible with NJ-series Controller Units, allowing for up to 16 master units per controller.

What is the power consumption of the module?
The unit has a current consumption of 400 mA maximum at 5 VDC.

Does the module feature galvanic isolation?
Yes, the RS-485 interface on the CJ1W-PRM21 is galvanically isolated from the controller CPU.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Japan

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