Westermo TD-36 - Manual (Page 20)

20 6618-2202
LED Indicators
LED Status Description
TD
Transmit data
OFF No data
ON / FLASH The modem receiving data on the DTE interface
RD
Receive data
OFF No data
ON / FLASH The modem transmitting data on the DTE interface
RTS
Request
to send
OFF RTS signal is inactive
ON RTS signal is active
DCD
Data carrier
detect
OFF DCD signal is inactive
ON DCD signal is active, modem has detected a carrier or the signal is
set to always ON
DTR
Data terminal
ready
OFF DTR signal is inactive
ON DTR signal is active
REL
Reliable mode
OFF Reliable mode is OFF, direct or normal mode
ON Reliable mode is ON
FLASH Reliable mode with error correction and compression
LINE OFF The modem is on-hook
ON The modem is off-hook with an established connection
FLASH Line backup interface in use
PWR
Power
OFF The modem has no power
ON The modem is up and running
Only for TD-36 485
I/O IN
OFF The I/O input is inactive
ON The I/O input is active
I/O OUT OFF The I/O output is inactive, C and NC connected
ON The I/O output is active, C and NO connected