Westermo TD-29P - Manual (Page 9)

GB.23 6611-2022
6.3 LED Status Indicators
PWR LED on Power on
LED off Power off
TD LED on Transmit line data active
LED off Transmit line data inactive
RD LED on Receive line data active
LED off Receive line data inactive
DCD LED on Data Carrier Detect active
LED off Data Carrier Detect inactve
6.2 Connections
Line connection
Power supply
RS-485 Interface
LED indicators