Installation and commissioning of the modems and routers
5.5 MD2 dedicated line modem
SINAUT ST7 station control system
System Manual, 09/2016, C79000-G8976-C178-10
165
Setting on DIL switch
Meaning
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 terminal device (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
Squelch OFF *)
This is a mandatory setting for the MD2 in conjunction with a TIM.
Squelch ON *)
This setting is not permitted for the MD2 in conjunction with a TIM.
Reset "Test receive" off / normal transmit level *)
Depending on the selected mode, this switch has two meanings:
In the "Test receive" mode, this switch setting has no function.
In all other modes, the transmit level for operation of the modem on
normal dedicated lines is set depending on switch S1 (5-pin DIL
switch) to 0 dB (S1 = ON) or –6 dB (S1 = OFF).
Reset "Test receive" on / reduced transmit level *)
Depending on the selected mode, this switch has two meanings:
In the "Test receive" mode, the test operation can be reset.
In all other modes, the transmit level for operation of the modem on
telephone company leased lines is reduced. Depending on switch S1
(5-pin DIL switch), the transmitter level is then set to
–9 dB (S1 = ON) or to –15 dB (S1 = OFF).
*) For detailed explanations of the squelch function and "Reset Test receive", refer to Chapter 4 of the MD2 Modem Description 6NH7811-
0AA21 that can be ordered separately.
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 ...