Leds Of The Tim 3 / Tim 4 - Siemens SIMATIC NET SINAUT ST7 System Manual

Installing and putting a TIM into operation
5.3 Design of the TIM 3 and TIM 4 modules
5.3.3

LEDs of the TIM 3 / TIM 4

The following table summarizes the meaning of the six LEDs during normal operation. The
display during startup is explained in the section "Startup activities of the TIM 3 and TIM 4
(Page 225)".
Table 5-11 Meaning of the LEDs on the front panel of the TIM 3 / TIM 4
LED no. Labeling
1 SF
2 TXD
3 RXD
4 MPI / K
5 TIM-BUS
6 DCF77
Note
If the TIM sends or receives data over its external modem interface, this is not indicated by
the TXD and RXD LEDs of the TIM. In this case, the LEDs of the external modem provide
information about the current send and receive activities of the external interface.
170
Relevant TIM port Type of WAN
driver
All -
Internal modem Dedicated line
interface
Dial-up network
Internal modem Dedicated line
interface
Dial-up network
MPI / K bus -
TIM-Bus -
DCF77 radio clock -
Description
Group error
Indicates missing or bad parameter settings and
RAM errors.
Transmit data
LED is lit constantly and is off while a message is
being sent (TXD).
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).
Receive data
As long as receive level (DCD) is detected, the
LED is lit and goes off while a message is being
received (RXD).
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).
Data flow over MPI / backplane bus
The display state changes with each message
received or sent over MPI / backplane bus.
(not currently used)
Status of the DCF77 clock (if installed)
As long as the time of day is clear, the LED is lit
constantly and is sampled briefly at second
intervals.
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06