KNX/485 Protocol Conversion Module Manual

I. Product Overview

This module is a bidirectional protocol conversion device designed specifically for intelligent building systems, which enables data transmission between KNX bus and RS-485 bus. Protected by industrial grade aluminum alloy casing, supporting dual power supply and intelligent error isolation, suitable for building automation system integration.

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II. Core Function

1. Bidirectional Transparent Transmission

• KNX Data Real time Forwarding to 485 Bus
• 485 Data After Protocol Verification, Forwarding to KNX Network

1. Intelligent Protection

• KNX Dedicated Chip Isolation Non standard Protocol
• Automatic Discarding of Illegal 485 Data

1. Flexible Configuration

• Baud rate supports 1200-112200 adjustable
• Supports custom data mapping rules

1. Industrial design

• Dual power independent power supply design (KNX/12V DC)
• Aluminum alloy shell, 8 × 4.5 × 1.8cm compact size

III. Technical parameters

4, Installation Guide

Wiring Instructions

KNX侧： 
  红色 - KNX+  
  黑色 - KNX-  

485侧：
  A - 485+  
  B - 485-  
  12V - 外接电源正极  
  GND - 电源负极

Power on process

1. Priority connection to KNX bus
2. Connect 12V DC power supply
3. Observe the status indicator light:

5, Configuration Tutorial

Configure software

Basic Configuration

地址修改协议帧示例（RS485端发送）
默认地址背面有标签标注，或者在RS485通讯下，12V供电先断开后重新上电，设备会反馈它的当前地址.

原地址 + F8 E7 D6 + 新地址  # 5字节地址长度
例如:1A 23 24 25 26 F8 E7 D6 1A 11 11 11 11 (把地址1A 23 24 25 26修改成1A 11 11 11 11）

透传功能控制
开启：地址 + F7 36 49 01 0F  
关闭：地址 + F7 36 49 00 0F

Data Mapping Configuration

1. Connect to PC using USB to 485 adapter
2. Run the configuration software and select the corresponding COM port
3. Enter the module address and enter configuration mode
4. Click the 'Learn' button to trigger the KNX device
5. Edit Conversion Rules in Data Window
6. Download Configuration and Exit Configuration Mode

Note: When there is no response during the first learning, you need to first execute the Download Empty Command

Video Tutorial

VI. Precautions

⚠️Important Warning

1. Non standard power supply is strictly prohibited from being connected to the KNX side
2. 485 bus. It is recommended to increase the terminal resistance

. 7. Troubleshooting