Product Description

Overview

The Schneider PC-E984-485 is a communication module designed for the Modicon 984 PLC family. It provides reliable RS‑485 serial connectivity for Modicon programmable logic controllers, enabling seamless data exchange with HMIs, SCADA systems, and other automation devices. Moreover, its compact plug-in design allows easy integration into existing PLC racks, making it ideal for industrial automation upgrades and expansions.

Technical Specifications

Electrical

• Communication Standard: RS‑485 (balanced differential serial link)

• Baud Rate: Configurable, 1.2 kbps to 115.2 kbps

• Maximum Cable Length: Up to 1200 meters (depends on baud rate and cable quality)

• Supported Protocols: Modbus RTU, Modbus ASCII

• Isolation: Galvanic isolation between PLC and network

Interface

• Connector Type: DB9 or terminal block depending on rack configuration

• Error Handling: CRC error detection and retry mechanisms

• Multi-node Support: Up to 32 devices per RS‑485 segment

Mechanical

• Form Factor: Plug-in communication module for Modicon 984 racks

• Dimensions: 130 mm × 40 mm × 90 mm (varies by rack type)

• Weight: 0.3 kg

Environmental & Compliance

• Operating Temperature: 0–60 °C

• Storage Temperature: −40–85 °C

• Relative Humidity: 5–95% non-condensing

• Certifications: UL, CE, CSA, IEC 61131

FAQ

Q1: Can the PC-E984-485 be used with Quantum PLCs?
Yes, it is compatible with Quantum PLC systems using RS‑485 communication.

Q2: What communication protocols are supported?
It supports Modbus RTU and Modbus ASCII protocols for industrial networking.

Q3: How many devices can be connected on one RS‑485 network?
Up to 32 devices can be connected in a multi-drop configuration.

Q4: What is the maximum cable length supported?
The maximum cable length is approximately 1200 meters depending on baud rate.

Q5: Is the module still supported despite being discontinued?
Yes, Radwell provides a 2-year warranty for the PC-E984-485.