LG MODBUS-RTU User Manual page 12

State
On/off from
time to time
Blinking with
CPU LED at the
same time
Blinking after
CPU LED one
after another
Off
*See COM group for Frequency/Run command setting.
ERR LED
Indicates
The card is receiving invalid data such
as noise.
Trouble with the Modbus card
Network communication is not done
during TimeOut (I/O 49) setting.
The card is functioning normally and
receiving and sending messages
modbus-rtu iS5 manual.doc 8
Corrective measures
Normal
Cycle the Inverter power. If the
problem persists, contact LG
Verify that the
specifying valid
addresses and valid data.
master is
register