Rs-485 Comms Status Led - Procon MelCOMMS MINI Installation Manual

5.6.4. RS-485 Comms Status LED

Next to the DIP switches are two LEDs, one of these will constantly be ON and the other will flash to indicate
successful Modbus communication with the MelcoBEMS MINI (A1M) units. If both are permanently ON then this
indicates no communication with the MelcoBEMS MINI (A1M) units.