Moxa Technologies UPORT 1110 - Manual (Page 7)

UPort 1110 and 1130 User’s Manual Introduction
1-4
LED Indicators
Active
RxD
TxD
1110
RS-232
USB-to-Serial Adaptor
Active
RxD
TxD
1130
RS-422/485
USB-to-Serial Adaptor
UPort 1110 UPort 1130
Name Description
Active
This LED indicates normal operation. If the driver is installed correctly and the
adaptor is plugged into a functioning USB port, the Active LED will light up
and remain on. If the LED does not light up, there may be a problem with the
adaptor, the driver installation, or PC configuration.
TxD This LED blinks when the adaptor transmits data through its COM port.
RxD This LED blinks when the adaptor receives data through its COM port.