Siemens SIMATIC NET SINAUT ST7 System Manual page 182

Station control system
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Installing and putting a TIM into operation
5.4 Options for attachment and settings of the TIM 3 and TIM 4 variants
Setting on
DIL switch
Another 4-pin DIL switch of the integrated MD2 modem can be accessed at the bottom of the
TIM housing. This switch activates terminating resistors at the WAN end. The following figure
summarizes the possible settings, the table lists the default settings.
Figure 5-27
182
Meaning
Character format: Message consisting of a series of asynchronous
characters, each 10-bit (1 start bit, 8 data bits, 1 stop bit).
This setting is required for transmitting SINAUT ST7 messages over
dedicated lines with the optional FT 2 message format. This format is
based on 10-bit asynchronous characters.
Control output switched with RTS
A floating optical relay is provided on pins 1 and 6 of the RJ-12
Western plug. This is active as long as the TIM outputs the RTS signal
(request to send) to the MD2 modem. This control signal can be used
to switch on a wireless device when the MD2 modem is used in
conjunction with a wireless system.
Reserved
Reserved
Always leave this switch in the OFF position for the integrated MD2
modem.
Reserved
This switch is used to reduce the transmit level to -9 dB (OFF) or -15
dB (ON).
For more detailed information, refer to the description of the 5-pin DIL
switch at switch 1.
Possible settings on the 4-pin DIL switch of the integrated MD2 modem
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06

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