tested with KCS firmware, enabled rs485 modbus as follows, INPUT1 (key1) is no problem. see the photos.
INPUT 1-35 begin with RS485 register 0
tested with key4 ,also is well. bit "0" means "pressed".
INPUT 1-35 begin with RS485 register 0
tested with key4 ,also is well. bit "0" means "pressed".
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