ASCII (RS-232) to Modbus RTU (RS-485) converter

The appearance of a Vibra scale

The appearance of the LUMEL recorder

The aim of the work was to create a converter that would ensure communication between the Vibra electronic scale and the LUMEL screen recorder.

For this purpose, the following was done:

  • hardware converter of the RS-232 to RS-485 standard;
  • software implementation of an ASCII format converter into a Modbus RTU-compatible protocol.

The electronic scale sends data in ASCII format (RS-232 standard) to the converter, and the converter further sends it to the recorder in a protocol compatible with Modbus RTU (RS-485 standard). The data sent from the scale to the recorder allows the weight to be read in the recorder with decimal accuracy.

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