CJ1W-PRM21 PROFIBUS-DP Master Unit for CJ-Series | Omron

The Original New Omron CJ1W-PRM21 is a PROFIBUS-DP master unit for SYSMAC CJ-series PLCs, enabling seamless integration of Omron control systems into PROFIBUS DP networks. As a PROFIBUS-DP Class 1 master with DP-V1 data type support, this CPU Bus Unit provides high-speed, deterministic data exchange between the CJ-series CPU and up to 125 PROFIBUS slaves. The module handles data exchange independently of the CPU unit, thus reducing CPU load. With a configurable transmission rate from 9.6 kbit/s to 12 Mbit/s and support for up to 7168 words of I/O data, the CJ1W-PRM21 delivers the performance and flexibility required for factory automation, process control, and distributed I/O applications.

Core Engineering Highlights:
PROFIBUS-DP Class 1 master with DP-V1 support | 9.6 kbit/s to 12 Mbit/s selectable baud rates | Up to 125 PROFIBUS slaves | 7168 words max I/O data (244 bytes in/out per slave) | 9-pin D-sub female connector | 400 mA current consumption at 5V DC | 90 × 65 × 31 mm | 100 g weight | 0°C to 50°C operating temperature | FDT/DTM-based configuration via GSD files

Key Features:

• Original New Omron CJ1W-PRM21 module

• PROFIBUS-DP master class one with support of DP-V1 data types

• Supports all baud rates as specified by EN50170 Volume 2 and IEC61158: 9.6 kbit/s, 19.2 kbit/s, 45.45 kbit/s, 93.75 kbit/s, 187.5 kbit/s, 500 kbit/s, 1.5 Mbit/s, 3 Mbit/s, 6 Mbit/s, and 12 Mbit/s

• Controls up to 7000 words of remote I/O data over PROFIBUS-DP

• Up to 125 PROFIBUS slaves per master

• 7168 words maximum I/O data capacity with 244 bytes input and 244 bytes output per slave

• Supported Global_Control services: Sync, Unsync, Freeze, Unfreeze, Clear

• Supported Master-Slave communication services: Data_Exchange, Slave_Diag, Set_PRM, Chk_Cfg, Global_Control

• 25 words control and status area

• 9-pin D-sub female connector (PROFIBUS standard)

• 7 LEDs for operational mode and network status indication

• Simple configuration through FDT/DTM-based configurator (CX-Profibus) with generic DTM for GSD-file based slaves

• Compatible with CX-Profibus configurator software

• CPU Bus Unit type for CJ-series

• Mounts on CJ-series CPU Rack or Expansion Rack

• Handles data exchange independently of CPU unit, reducing CPU load

• Unit No. selectable 0-15

Applications:

• Integration of Omron CJ-series PLCs into PROFIBUS DP networks

• Distributed I/O systems with PROFIBUS slave devices

• Factory automation and production line control

• Process control and monitoring applications

• Automotive assembly lines

• Material handling and conveyor systems

• Multi-vendor device networking with PROFIBUS-compatible drives, HMIs, and sensors

Technical Specifications:

System Compatibility:

• Compatible with Omron SYSMAC CJ-series CPU units (CJ1, CJ2)

• Compatible with NJ-series Machine Automation Controllers

• Installs on CJ-series CPU Rack or Expansion Rack via CJ I/O Bus

• Configuration via CX-Profibus configurator (FDT/DTM-based)

• Supports GSD-file based slaves via generic DTM

• Maximum 16 units mountable per PLC (depends on CPU type)

Related Products:

• CS1W-PRM21 – PROFIBUS-DP master unit for CS-series

• CX-Profibus – Configurator software for PROFIBUS DP networks

• GRT1-PRT – PROFIBUS DP slave module for SmartSlice I/O

• CJ1W-PA205R – Power supply unit for CJ-series CPU rack

• CJ1W-ID211 – 16-point DC input unit

• CJ1W-OD211 – 16-point transistor output unit

• PROFIBUS cable and connectors – For network wiring

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Omron, SYSMAC, and CJ-series are trademarks of Omron Corporation.