Calculating CRC for Modbus RTU - MEL PICBASIC Forum - MELabs PICBASIC

Hi, I'm working on a SCADA industrial control system that communicates via Modbus RTU. I'm using a 16F648A with a MAX232 serial driver. The hardware all works fine, but I can't figure out how to calculate the CRC. Apparently Modbus has a specific CRC ...

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