Products/RS485 module

2-channel RTD module RTD-RS01P

PC Temperature Module PT100/PT1000 Acquisition Debug Module User Manual V1.0

1. Overview

This software is a dedicated PC control program designed for the RS01P series RTD temperature transmitter modules.

Compatible with Windows operating systems only!

Core Features:

  • 2-Channel RTD: Can simultaneously acquire data from 2 RTD channels, supporting 2-wire, 3-wire, or 4-wire connections.
  • Multi-Type Support: Supports both PT100 and PT1000 RTDs.
  • Dual Language Selection: Supports switching between Chinese and English.
  • LAN Web Component Support: Enables a LAN webpage with one click, allowing multiple devices to view data simultaneously.

2. Preparations

Before running the software, ensure the hardware is correctly connected:

  1. Connect Converter: Connect the USB to 485 converter to your computer.
  2. Connect Module: Connect the module's A+ and B- wires to the 485 converter.
  3. Connect RTD:
    • 2-Wire Connection: One end connects to CH1-CH2, the other end to COM. Polarity does not matter.
    • 3-Wire and 4-Wire Connection:
      • Group wires by color. One end (grouped wires) connects to CH1-CH2, the other end to COM. Polarity does not matter.

3. Software Operation

Software Interface

  1. Run Program: Open RTD.V1.0.exe.

  2. Configure Serial Port: In the "Port Number" box at the top right, enter the COM port identified by your computer.

3.1 How to Obtain the COM Port Number

  1. Search for "Device Manager" in the Windows system and open it.

image-20251008145921153

  1. Open "Ports (COM & LPT)" to check. Normally, drivers are not required. If it is not recognized, you may need to install the relevant driver CH341SER.EXE.

image-20251008150053248

3.2 How to Operate:

  1. Enter the correct COM port number.
  2. Click the "Read" button to correctly identify the slave station address.
  3. RTD Type: Select whether PT100 or PT1000 is connected.
  4. Start Acquisition.
  5. This software has built-in web functionality. After enabling it, you can view sensor values through a browser on the local area network.
  6. View test values on the left panel.

Web 485 LAN Web Page

4. Troubleshooting

  • Error: "Operation failed: could not open port 'COMX': PermissionError..."
    • Cause: The COM port you are trying to use is already occupied by another program (e.g., another serial port tool, an old version of the program you didn't close previously).
    • Solution: Close all programs that might be using that serial port and try again.
  • No response after clicking "Read Address" or "Refresh Status"
    • Cause: Incorrect COM port selection, mismatched slave address, or hardware wiring issues.
    • Solution: Carefully check the above three aspects窗口中.