Seeking Modbus communication for Ingersoll Rand centrifugal air compressors
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The first image shows the compressor model, the second image shows the appearance of the control cabinet, and the third image shows the communication module
Thank you, I’ve figured it out: the baud rate is 9600, there are 8 data bits, 1 stop bit, no parity check, the address is 16. It’s a two-wire connection with RX+ and RX-, where TX+ is connected to RX+ and TX- is connected to RX-. However, there is packet loss in the data, measured directly at the terminals inside the compressor control cabinet