OMRON

Omron CJ1W‑DRM21, CJ‑Series DeviceNet Master/Slave CPU Bus Unit

Warranty： 365 days
Quality: Original module
Condition： New / Used
Warehouse: Spot
Delivery time: Shipped in 3 days after payment
Mailbox：plcvarious@foxmail.com

+086 18205988494

Introduction

1. Main Functions

Dual‑mode Master & Slave Operation This communication unit supports DeviceNet master function, slave function, or running both master and slave modes on one hardware module at the same time.It connects to CJ‑series PLC backplane via CPU Bus, exchanging data with CJ‑series CPU internally.
Remote I/O Real‑time Communication As a master station, it handles remote I/O cyclic data exchange. Maximum I/O capacity reaches 32,000 points (2000 words) with configuration‑tool setup, guaranteeing high‑synchronization real‑time data transmission across the field‑bus network.It supports both fixed‑address allocation and user‑defined memory allocation for I/O mapping.
Explicit Message Communication Supports acyclic explicit message service for parameter read‑write, diagnosis and configuration of third‑party DeviceNet‑compliant field devices.
Standard DeviceNet Protocol Compliance Built‑on CAN2.0B hardware layer; selectable baud rates: 125 kbps, 250 kbps, 500 kbps. Maximum 63 slave nodes can be linked to one master unit. Multi‑drop and T‑branch wiring topology are acceptable.plcva.com
Diagnostic & Maintenance Functions Equipped with LED status indicators, communication error log, network voltage monitoring, device runtime counter, error status recording. Configuration files can be uploaded/downloaded via PLC memory card for fast commissioning and backup. Works with CX‑Integrator configuration software for network setup, monitoring and troubleshooting.

Omron CJ1W‑DRM21

2. Applications / Purposes

Distributed factory‑automation control system Deployed on CJ‑series PLC to build DeviceNet field‑bus network, cut down complex field wiring. Link remote I/O blocks, proximity sensors, photoelectric sensors, valve terminals, actuators and variable‑speed drives on production lines.
Multi‑vendor device integration Interconnect automation devices from different manufacturers complying with DeviceNet open standard, realize cross‑brand device data interaction on one bus network.plcva.com
Machine‑level automation for packaging, material handling, assembly machines Implement decentralized I/O control for standalone machines or production cells; use dual master‑slave mode to realize inter‑PLC data exchange between DeviceNet segments.
System retrofitting & expansion Serve as communication interface for CJ‑series controller to connect legacy DeviceNet equipment during automation upgrade projects.