Installing and putting a TIM into operation
4.2 Design of the TIM 4R-IE
Station control system
140
System Manual, 07/2009, C79000-G8976-C178-07
4.2.3
LEDs of the TIM 4R-IE
The following table summarizes the meaning of the LEDs during normal operation. The
display during startup is explained in the section "Startup activities of the TIM 4R-IE
(Page 175)".
Table 4- 6
Meaning of the LEDs on the front panel of the TIM 4R-IE
LED no. Labeling
Relevant TIM port
Type of WAN
driver
Description
1
BATF
All
-
If there is a functioning battery installed, the LED is
off.
The LED lights up red if the battery is not inserted in
the battery compartment or if the battery voltage is
too low.
2
KBus
K bus
-
Data flow over the backplane bus
The display state changes with each message
received or sent over the backplane bus.
Dedicated line
Transmit data
LED is lit constantly and is off while a message is
being sent (TXD).
3
TXD1
RS-232 interface 1
Dial-up network Transmit data
No connection established:
LED is off.
Connection is established:
LED is lit constantly and is off while a message is
being sent (TXD).
Dedicated line
Receive data
As long as receive level (DCD) is detected, the LED
is lit and goes off while a message is being received
(RXD).
4
RXD1
RS-232 interface 1
Dial-up network Receive data
Lights up with an incoming call (RI), remains lit as
long as receive level (DCD) is detected and goes off
while a message is being received (RXD).
Dedicated line
Transmit data
LED is lit constantly and is off while a message is
being sent (TXD).
5
TXD2
RS-232 interface 2
Dial-up network Transmit data
No connection established:
LED is off.
Connection is established:
LED is lit constantly and is off while a message is
being sent (TXD).
