Name: Omron CJ1W-PRT21 PROFIBUS-DP Slave Communication Unit - INOSAKI
SKU: Omron-CJ1W-PRT21
Price: 524.49 USD
Availability: InStock

Technical Overview

The Omron CJ1W-PRT21 is a robust PROFIBUS-DP slave communication unit designed to integrate CJ-series PLCs into PROFIBUS networks. It acts as an intelligent I/O link unit, enabling reliable, high-speed cyclic data exchange (up to 12 Mbps) between the PLC and master field devices. This expansion module fits directly into CJ1 PLC racks and provides flexible data mapping for up to 100 input and 100 output words (up to 180 words combined maximum). Operating efficiently on the 5VDC PLC backplane, it ensures deterministic data transfer critical for continuous factory automation and process control applications.

Key Features

Protocol Support: Delivers standardized PROFIBUS-DP slave functionality for fieldbus integration [1.1].
High-Speed Communication: Capable of supporting network transfer rates up to 12 Mbps.
Large Data Capacity: Handles up to 100 input words and 100 output words (180 words combined limit).
Direct Rack Integration: Mounts directly onto Omron CJ-series PLC CPU or expansion racks via DIN rail.
Standardized Connectivity: Equipped with an electrically isolated 9-pin D-sub interface supporting up to 126 network nodes.
Extensive Diagnostics: Provides built-in LED indicators and sends extended diagnostic statuses directly to the PROFIBUS master.
Harsh Environment Readiness: Rated for operation in 0°C to 55°C industrial environments with CE and cULus certifications.

Technical Specification Matrix

Parameter	Value
Product Type	PROFIBUS-DP Slave I/O Link Unit
Supported Protocol	PROFIBUS-DP
Network Role	Slave
Max Data Transfer Rate	Up to 12 Mbps
Data Size Capacity	Max. 100 input / 100 output words (180 words combined max)
Number of Nodes	Up to 126
Connection Interface	9-pin D-sub connector
Current Consumption	400 mA at 5 VDC (from PLC backplane)
Mounting Type	CJ-series PLC rack / DIN rail
Operating Temperature	0°C to +55°C
Storage Temperature	-20°C to +75°C
Operating Humidity	10% to 90% (non-condensing)
Dimensions	90 mm (H) × 65 mm (W) × 31 mm (D)
Weight	Approx. 90 g
Certifications	CE, cULus

Industrial Applications

1. Fieldbus Integration in Automotive Assembly Lines

Seamlessly bridges Omron CJ-series localized control systems into legacy PROFIBUS-DP master networks common in automotive plants. The CJ1W-PRT21 functions as a high-speed slave node to communicate tooling logic without requiring an overhaul of the entire network backbone.

Problem Solved

Provides backward compatibility and reliable integration for localized PLCs interacting with centralized, legacy PROFIBUS-based plant controllers.

PROFIBUS-DP SlaveFieldbus IntegrationDeterministic Data TransferLegacy Network Bridging

2. Distributed I/O Control for Process Telemetry

Utilizes its up to 12 Mbps data transfer rate and robust isolation to continuously exchange high volumes of localized sensory and valve state data over long distances in process automation facilities.

Problem Solved

Resolves bandwidth and noise-immunity issues when pushing large blocks of I/O data (up to 180 words) from remote process skids to a master supervisory station.

12 Mbps Transfer Rate180-word Data ExchangeElectrically Isolated CommunicationDistributed Process Control

3. Material Handling and Conveyor Coordination

Acts as an intelligent data link unit in warehousing environments, allowing a CJ-series PLC managing a localized conveyor zone to send and receive real-time positioning, interlocking logic, and status diagnostics directly to the main sorting controller.

Problem Solved

Ensures precise timing and large cyclic data updates between autonomous conveyor zones to prevent collisions and bottlenecking in automated material routing.

Cyclic Data Exchange100 Input/Output WordsReal-Time DiagnosticsMaterial Handling Interlocking