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    RS485 3Relay boards and PI

    Thanks Alex! So I wasn't aware that the address needed to be added together for mtest to function correctly. That was all it is. Looks like com is working as expected, just a mistake on my part. Thanks for the clarification on the -list command too.
  2. L

    RS485 3Relay boards and PI

    Running into a bit of a problem, and assume it's something I've missed or misconfigured. Any help or guidance on this would be greatly appriciated. I have a fresh install on a PI 4, one 3Relay HAT directly on the GPIO with the RX and TX dip switches turned on, I2C turned on, Serial off for...
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