Siemens SINAUT ST7 - Connectors and Configuration Switches Accessible from below

Installing and putting a SINAUT modem into operation
5.8 ISDN dial-up modem MD4
Station control system
System Manual, 07/2009, C79000-G8976-C178-07
267
5.8.3 Connectors and configuration switches accessible from below
The following figure shows the MD4 modem from below with the X3 RJ-12 Western jack and
the DIL switch for activating the RS-232 or RS-485 interface.
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21
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2))
21
;SLQ5-:HVWHUQMDFN
:$1FRQQHFWRUIRUWKH0'PRGHP7KH
FRQQHFWLQJFDEOHLVVXSSOLHGZLWKWKH0'
)URQWSDQHOODEHOHGಪ0RGHPಫ
7KLVSLQ',/VZLWFKVSHFLILHVZKHWKHUWKH
56RU56LQWHUIDFHZLOOEHDFWLYDWHG
)RU56PRGHWKHWHUPLQDWLQJUHVLVWRULV
DOVRDFWLYDWHGKHUH%HORZWKHVWDQGDUG
VHWWLQJVIRU56RU56
56LQWHUIDFH
DFWLYDWHGDVVKLSSHG
56LQWHUIDFH
DFWLYDWHGDQGWHUPLQDWLQJ
UHVLVWRUDFWLYDWHG
Figure 5-52 View of the MD4 modem from below
Settings with the DIL switches accessible from below
A 4-pin DIL switch on the bottom of the modem housing is accessible from below. This DIL
switch is used to activate either the RS-232 or RS-485 interface. For RS-485 operation, you
can also activate the terminating resistor. The following figure shows the possible settings in
general.
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   
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21
56
56
1R56
WHUPLQDWLQJ
UHVLVWRU
56
WHUPLQDWLQJ
UHVLVWRU
DFWLYDWHG
Figure 5-53 Possible settings on the 4-pin DIL switch accessible from below