SINAUT MD3 modem

Modems are used for wired transmission of signals and data between individual stations and the control centers of telecontrol systems. Siemens offers appropriate modems for both dedicated lines and dial-up networks.

Like the TIM modules, these are accommodated in an S7-300 enclosure:

• MD2;
  dedicated-line modem for multi-point connection,
  can be tapped,
  can also be used as a repeater,
  max. 19,200 bps
• MD3;
  modem for the analog telephone network,
  max. 33,600 bps;
  can also be used as a dedicated-line modem for a point-to-point connection,
  max. 33,600 bps in voice band

These modems can be connected to the serial modem interface of a TIM module.

The modems are supplied together with the WAN connecting cable required in each case. Connecting cables for connecting the modems to a TIM must be ordered separately.