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- Honeywell
- FC-DCOM-234
- Safety Manager System Communication Module
- USA
- 120 × 100 × 80 mm
- 1.0kg
- Xiamen, China
- New & In Stock
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Honeywell FC‑DCOM‑234
Product Introduction
The FC‑DCOM‑234/485 is an industrial-grade communication interface module that provides both RS‑232C and RS‑485/422 connectivity. Tailored for use within Honeywell’s automation platforms (such as Experion, ControlEdge PLCs, and Safety Manager systems), this module facilitates seamless communication with legacy and third-party equipment—including flow computers, RTUs, PLCs, analyzers, and field sensors. It supports Modbus RTU in both master and slave configurations, ensuring interoperability across diverse industrial environments.
Applications
Ideal for:
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Integrating serial devices into modern Honeywell control systems
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Connecting SCADA, PLCs, and sensors via Modbus RTU
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Bridging legacy RS‑232 or RS‑485 Tier devices to automation platforms
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Process automation in energy, oil & gas, water treatment, and manufacturing
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Enabling remote asset and pipeline telemetry via serial links
Key Advantages
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Dual Port Flexibility: Switch between RS‑232C and RS‑485 protocols via configuration
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Compact Installation: DIN‑rail or baseplate mountable in standard control cabinets
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Modbus RTU Compatibility: Supports both master and slave modes for flexible deployment
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High Reliability: Features optical isolation for RS‑485 path, LED diagnostic indicators, and industrial-grade build
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Hot‑Swap Ready: Designed to be replaced or added without shutting down the host controller
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Robust Environmental Tolerance: Wide operating temperature, humidity resistance, and conformal coating
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | FC‑DCOM‑234 |
| Brand | Honeywell |
| Function | RS‑232C / RS‑485 serial interface module |
| Ports | 1 × RS‑232C, 1 × RS‑485/422 |
| Protocols | Modbus RTU (Master/Slave), limited ASCII, custom |
| Baud Rate | RS‑232: up to 250 kBaud RS‑485: up to 2 MBaud |
| Port Config | Software-configurable (parity, data bits, etc.) |
| Isolation | Optical on RS‑485 line |
| Device Support | Up to 32 devices on RS‑485 bus |
| Power Supply | 5 V DC via controller backplane (≤ 500 mA) |
| Mounting | DIN‑rail TS32/TS35 (approx. 117 mm rail length) |
| Dimensions (L×W×H) | 120 × 100 × 80 mm |
| Weight | ~1.0 kg |
| Operating Temp. | –20 °C to +60 °C |
| Storage Temp. | –40 °C to +85 °C |
| Humidity | 5%–95% RH (non-condensing) |
| Certifications | CE, UL, CSA, RoHS compliant |
| LED Indicators | TX, RX, Status, Comm Error |
| Environmental Coating | Conformal coating available for harsh conditions |
Related Models (Same Family)
| Model | Description | Key Highlights |
|---|---|---|
| FC‑DCOM‑234/485 | Dual RS‑232/RS‑485 interface (this) | Flexible serial options |
| FC‑DCOM‑232 | RS‑232 only interface | Legacy RS‑232 support |
| FC‑DCOM‑485 | RS‑485 only interface | Industrial-grade RS‑485 bus |
| FC‑DCOM‑ETH | Ethernet / Modbus TCP module | Network-based communications |
| FC‑DCOM‑CAN | CAN‑bus interface module | Motion control and machine networks |
Popular Honeywell Products
| Model | Description |
|---|---|
| FC‑DCOM‑234/485 | Dual serial interface (this model) |
| FC‑DCOM‑ETH | Ethernet communication module |
| FC‑DCOM‑CAN | CAN‑bus interface for machinery |
| FC‑IODI16 | Digital input module (16 points) |
| FC‑IODO16 | Digital output module (16 points) |
Frequently Asked Questions (QA)
Q1: Can the module act as both Modbus master and slave?
A1: Yes, it supports both configurations as needed.
Q2: Can RS‑232 and RS‑485 ports be used at the same time?
A2: No, only one port is active at a time, selectable via software.
Q3: Is the RS‑485 interface isolated?
A3: Yes, it includes optical isolation to maintain signal integrity.
Q4: Does it support hot‑swapping?
A4: Yes, if the host controller architecture allows it.
Q5: What configuration parameters are programmable?
A5: You can set baud rate, parity, data bits, and stop bits via software.
Q6: How many devices can be connected via RS‑485?
A6: Up to 32 devices on one RS‑485 bus according to the spec.
Q7: What is the operating temperature range?
A7: –20 °C to +60 °C; storage up to +85 °C.
Q8: What are the physical dimensions and weight?
A8: 120 × 100 × 80 mm; approximately 1 kg.
Q9: Does it have diagnostic LEDs?
A9: Yes—there are LEDs for TX, RX, status, and communication errors.
Q10: Can it be mounted on DIN rail?
A10: Yes, it supports standard TS32/TS35 DIN rail mounting.
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All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
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We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
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24-hour after-sales service guarantee team, professional and standardized management service system.