If the LED blinks rapidly a few seconds (2 or 3) and then blinks slowly verify:
That the IP address and port to which the GRD is attempting to connect are the
correct ones.
That there is no reason why the server is rejecting the connection request (ex.
That is requesting identification or authentication).
A connection is established and then it closes
Verify that there is no reason why the server is rejecting the connection request
(ex. That is requesting identification or authentication).
The connection is established but the communication fails
If the Link LED remains constantly on and it does not blink, is indicating that there is
no data reception or transmission. If the Link LED blinks sporadically, it is indicating
that data are being sent and/or received. In any case verify:
That the established broker connection was made to the correct IP address and
port (through SMS with the ‘
state
’ command).
For more information on troubleshooting problems please contact
support@exemys.com
2020-09-28
GRD-MQ User Manual
Troubleshooting
84 / 84
Summary of Contents for GRD-MQ Series
Page 26: ...Analog inputs GRD MQ User Manual Physical Inputs Outputs 25 84 ...
Page 33: ...2020 09 28 GRD MQ User Manual Features of power supply and inputs outputs 32 84 ...
Page 74: ...2020 11 20 GRD MQ User Manual Scripts Publish Subscribe 73 84 ...
Page 76: ...Wiring Terminal Blocks 2020 10 05 GRD MQ User Manual GRD1620 MQ 3G 75 84 ...
Page 79: ...2020 10 05 GRD MQ User Manual GRD3621 MQ 3G 78 84 ...
Page 83: ...Wiring Terminal Blocks 2020 10 05 GRD MQ User Manual GRD3534 MQ 3G 82 84 ...