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When proper PLC-Gateway Cable is connected and power is applied to
Gateway, and if external Device is not responding or power is not applied to
external Device or Communication cable is faulty, then this LED will blink at slow
rate.
This LED will light on steady, when proper communication happens between
Gateway and external Device.
COM2 LED
Slow blinking of this LED indicates Gateway is trying to Communicate with Com2
Device and device is not responding, no power to Com2 Device or
Communication Cable Fault. This may also happen in case of invalid baud rate
or Communication Parameters.
Fast blinking indicates that, Communication is happening with Com2 Device.