Weintek Modbus Server (Local, port 8000) — client connects but LB-9058 never triggers, all reads time out

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Weintek Modbus Server (Local, port 8000) — client connects but LB-9058 never triggers, all reads time out
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  • HMI Model: MT8071iE
  • EasyBuilder Pro Version: 6.10.02.300

Hi all,

I’m working on a Modbus TCP integration on a Weintek HMI (EasyBuilder Pro, running under Online Simulation, not Off-line — since Off-line has no real device I/O). Goal is to expose a few Local HMI registers (LW/LB) via a Modbus TCP Server so an external Modbus master (a Node.js client using modbus-serial) can poll them.

Setup:

  • Device List → added a “Local Server” device, protocol MODBUS Server, Location = Local, Ethernet, Port = 8000

  • Station No. matching set to “Use station no. given by client request”

  • Address Mapping Table populated with 5 entries, all pointing to Local HMI:

    • 4x-100 ↔ LW-100

    • 4x-102 ↔ LW-102

    • 4x-103 ↔ LW-103

    • 0x-100 ↔ LB-100

    • 0x-101 ↔ LB-101

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Hi @rizal.honicel123 ,

Thank you for your question. For the Modbus Server, we recommend changing the port number from 8000 to 502. On an iE series model, you can make this change in the Model tab within System Parameters.