Overview

The HCOM-100 is a signal converter that converts RS-232 signals to RS-422 or RS-485. It supports long-distance communication up to 1.2 km, offering a switchable mode selection between RS-422 and RS-485. The module is compatible with PC serial COM ports and does not require additional software for operation.

1. Safety Information (p.3-4)

• Electrical Hazards:
  • Ensure power isolation before installation or maintenance.
  • The equipment operates at high voltage, requiring extreme caution.
• Electrostatic Discharge (ESD) Precautions:
  • Handle PCBs with care to prevent static damage.
  • Use conductive packaging for PCB storage.
  • DO NOT remove or install PCBs while power is applied.

2. Storage Before Installation (p.5)

• Store the equipment in a dry, covered area to protect from moisture and extreme temperatures.
• Inspect components for physical damage before installation.
• Ensure that packing cases are stored in a dry area to avoid water damage.

3. Features (p.6)

• RS-232 to RS-422/RS-485 signal conversion.
• Selectable RS-422 or RS-485 mode via a switch.
• Supports long-distance communication up to 1.2 km.
• RS-422: 1-to-10 communication support.
• RS-485: 32-to-32 communication support.
• No external power required (powered via RS-232 DTR).

4. Technical Specifications (p.6-7)

• Communication Type: Asynchronous Serial Communication.
• Baud Rate: 1,200 ~ 115,200 bps.
• Maximum Communication Distance: 1.2 km.
• Connector Types:
  • RS-232: DB9 Female.
  • RS-422/485: Terminal Headers.
• Physical Characteristics:
  • Dimensions: 65(W) × 65(D) × 28(H) mm.
  • Weight: 65g.
  • LED Indicators:
    • Power (Red)
    • Rx (Red)
    • Tx (Green)

5. Function (p.7)

• RS-232 to RS-422/RS-485 Mode Selection:
  • Use the 2-pin short jumper to switch between RS-422 or RS-485 mode.
  • RS-422 Mode: Supports 1-to-10 communication.
  • RS-485 Mode: Supports multi-device communication (32-to-32).
• RS-232 DB9 Female Pinout:
  • Standard DB9 configuration for serial communication.

6. Revision History (p.8)

• Version R2 (2025.03.03) – Form revision update.