USER MANUAL – S203TA-D / S203RC-D
53
10.
DEBUG LEDs
LED
LED status
Meaning
PWR
Constant light
The module power is on
ERR
Constant light
Measure of voltage: <45Vac (at least one of the phases used)
RX
Blinking light
The module received a data packet from RS485
TX
Blinking light
The module sent a data packet to the RS485