State
Indicates
Blinking
Card is installed properly and working
normally
Off
Card is not installed properly
Inverter is not operating normally
State
Indicates
Blinking
Card is functioning normally and receiving
and sending messages
modbus-rtu iS5 manual.doc 6
CPU LED
RXD and TXD LEDs
Corrective measures
Verify that the card is installed
properly
Verify that the inverter has power
Corrective measures
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