FC-DCOM-234/485 Honeywell | Safety System Communication

Honeywell FC-DCOM-234/485 Safety Manager System Module

The FC-DCOM-234/485 from Honeywell is a dedicated communication module for Safety Manager systems. It provides reliable serial interface connectivity for safety controllers and external devices. This module enables secure data exchange within safety instrumented systems. It supports both RS-232 and RS-485 protocols for flexible integration.

Core Technical Specifications

• Brand & Model: Honeywell FC-DCOM-234/485
• Product Type: Safety Manager System Communication Module
• Safety Level: SIL 2 (IEC 61508) certified
• Communication Ports: 2 independent serial ports
• Port 1 Protocol: RS-232 (point-to-point)
• Port 2 Protocol: RS-485 (multi-drop, up to 32 nodes)
• Baud Rate Range: 1.2 kbps to 115.2 kbps (software configurable)
• Isolation: 1500 VAC isolation between ports and logic
• Data Integrity: 16-bit CRC error checking on all messages
• Watchdog Timer: Hardware-based, configurable 1-10 second range
• Operating Temperature: -40°C to +70°C (industrial grade)
• Power Supply: 5 VDC from Safety Manager backplane
• MTBF: >350,000 hours per IEC 61709

Installation & Configuration

• Install directly into the Safety Manager system chassis or rack.
• Configure port parameters (baud rate, parity) via system engineering software.
• Use shielded, twisted-pair cables for RS-485 networks with proper termination.
• Ensure maximum RS-485 network length does not exceed 1200 meters.

Packaging & Support

• The module is supplied new and original in factory packaging.
• Includes the communication module and installation notes.
• Shipped globally via DHL, FedEx, or UPS with full tracking.

FAQ

• What is the main application? Connecting Safety Manager systems to HMIs, printers, or other serial devices.
• Can both ports be used simultaneously? Yes, both RS-232 and RS-485 ports can operate at the same time.
• Is Modbus protocol supported? Yes, the module supports Modbus RTU protocol on the RS-485 port.

For protocol configuration guides and technical support for the Honeywell FC-DCOM-234/485, contact our team.

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