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Installation and commissioning of the modems and routers
5.8 ISDN dial-up modem MD4
SINAUT ST7 station control system
System Manual, 09/2016, C79000-G8976-C178-10
217
The design, protection concept, and the LTOP variants are described in the section
LTOP
line transformers with overvoltage protection
.
Note
If you require an LTOP in conjunction with the MD3 modem in dedicated line mode, only the
LTOP1 variant can be used.
Connecting up the MD3 modem
The following figure shows how to connect the MD3 modem in dedicated line mode. The
LTOP 1 is connected up over the standard cable 6NH7700-3BR60 that ships with the
modem. This cable has RJ-12 Western plugs at both ends.
Note
Please make sure that the S1 switch is set correctly to position 2 as shown in the following
figure.
Attachment to a 2-wire end point
Figure 5-44 Connecting the MD3 to an LTOP1 with a 2-wire end point
5.8
ISDN dial-up modem MD4
This section describes the design of the MD4 modem, its connectors, display elements and
switches.
Содержание SIMATIC NET TeleControl SINAUT ST7
Страница 10: ...Preface SINAUT ST7 station control system 10 System Manual 09 2016 C79000 G8976 C178 10 ...
Страница 274: ...References 8 SINAUT ST7 station control system 274 System Manual 09 2016 C79000 G8976 C178 10 ...
Страница 292: ...Glossary SINAUT ST7 station control system 292 System Manual 09 2016 C79000 G8976 C178 10 ...