Part Number - CJ1W-PRM21

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CJ1W-PRM21 is

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Product Details

  • CJ1 Network Control Module (CJ1WPRM21)
  • Manufacturer: Omron
  • Series: CJ1

Product Description

The Omron CJ1W-PRM21 (CJ1WPRM21) is a CJ1 series network control module. The control module can manage the PROFIBUS which has to use the dedicated configuration program CX-PROFIBUS. If the CJ1W-PRM21 network control module fails to participate in this specific configuration it will be impossible for the module to make any data exchanges. The Omron master control module will operate under certain Microsoft Windows programs such as NT 4.0, 2000 or XP.

The CJ1W-PRM21 control module is permitted to connect with 16 PROFIBUS network applicable PLCs in an Omron configuration that is likewise configurable to a PROFIBUS network. The master control module has a port that connects to an RS-485 cable which is galvanically isolated from the PLC. The CJ1W-PRM21 control module does not directly append to a personal computer. By being a member of the Omron configuration the module can connect to the computer using an EIA RS-232C cable and attach it to the peripheral port or RS-232C port. Then the CX-configurator CD program may be inserted in the personal computer, creating the PROFIBUS network. The Omron configuration, which the master module is a part of, may be mounted on either a CPU rack or a CJ1 expansion.

The CJ1W-PRM21 control module has a current consumption of 400mA when the voltage is at 5VDC. The dimensions of the master module are 31mm by 90mm by 65mm (1.22in by 3.54in by 2.56in). The configurator may also choose one of the twelve selected baud rates that range between 9.6 kBit/s to 12 Mbit/s.

Here is the source material that may have been referenced:

Technical Specifications

Part Number: CJ1W-PRM21 (CJ1WPRM21)
Module Type: Network Control Module
PROFIBUS Network Master
Current Consumption: 400mA at 5VDC
Weight: 0.22kg (0.1kg)

Related Parts

CJ1M-CPU12 - Omron CJ1 Programmable Control Module (CJ1MCPU12)
CJ1M-CPU13 - Omron CJ1 Control Module (CJ1MCPU13)
CJ1M-CPU21 - Omron CJ1 Control Module (CJ1MCPU21)

Shipping and Order Information

  • TRW Supply can usually ship in stock items same day before 3:30 PM EST for no extra cost and before 5 PM with a rush fee
  • Omron CJ1 Shipping options vary by location. Call for an accurate quote.


  • The Omron CJ1W-PRM21 comes with a two year warranty.
  • A three year warranty is available. Please inquire for pricing.

Additional Information

TRW Electric & Supply Company is a global automation supplier. We deliver reliable new and refurbished parts at a great value. Our product focus is Omron and Mitsubishi products, but we have been able to provide our customers with solutions from other manufacturers as well. Our goal is to supply the automation industry with the best service and pricing, and of course conduct business with a high level of integrity.

Authorized Distributors

A Omron Authorized Distributor for CJ1 is not the only source for Omron products. Many of the Omron products have been discontinued and therefore are no longer available from authorized suppliers. TRW Electric & Supply has many new and refurbished Omron CJ1 parts available for purchase.

More Information: CJ1W-PRM21, CJ1WPRM21, CJ1W PRM21, CJ1W-PRM 21

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