Short Haul Modems

Westermo short haul modems (LD, LA and MA series) transmit serial data over dedicated copper pairs between industrial equipment, without requiring the public telephone network.

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Short Haul Modems

Westermo short haul modems are used on 4- or 2-wire private lines. The products in this group require a 4-wire line for full- or half-duplex communication. Another name for this type of device is line driver.

Point to point
RS-232/V.24 for point to point connections over 4-wire.

Line sharing devices
RS-232/V.24 and RS-422/485 in multipoint or star connections over 4-wire.

Multiplexers
RS-232/V.24 for 4 up to 16 ports over 2-, 4-wire.

MA-12 Point to Point Modem
  • RS-232/V.24 interface
  • Use this unit when the transmission
    distance is greater than 50 feet
  • Guarantees reliable long-distance communication
MA-12
MA-19 Point to Point Modem
  • RS-232/V.24 interface
  • Use this unit when the transmission distance is greater than 50 feet
  • Guarantees reliable long-distance communication
  • Rack Mounting
MA-19
MD-12 Point to Point Modem
  • RS-232/V.24 interface
  • 35 mm DIN-rail mounting
  • Use this unit when the transmission distance is greater than 50 feet
  • Guarantees reliable long-distance communication
MD-12
MM-14 Point to Point Modem
  • RS-232/V.24 interface
  • Use this unit when the transmission distance is greater than 50 feet
  • Guarantees reliable long-distance communication
MM-14
LA-01 AC BP Line Sharing Modem
  • RS-232/V.24 interface
  • Used for long distance communication in multidrop networks
  • Units provide totally transparent data communications
LA-01 AC BP
LD-01 Line Sharing Modem
  • 35 mm DIN-rail mounting
  • RS-232/V.24 interface
  • Used for long distance communication in multidrop networks
  • Units provide totally transparent data communications
LD-01
LD-02 DC Line Sharing Modem
  • 35 mm DIN-rail mounting
  • RS-232/V.24 or RS-422/485 interface
  • Used for long distance communication in multidrop networks
  • Functions independently of codes
LD-02
LA-10 Star Network Splitter Line Sharing Modem
  • Rack Mounting
  • Used to create star networks
  • RS-232/V.24 interface
  • Guarantees high performance and reliable functionality
LA-10
MX-16 Multiplexer Unit
  • Four RS-232/V.24 interfaces
  • Speed/format conversion possible
  • Saves cable and cabling time
  • Guarantees reliable performance and high functionality
MX-16
LD-34 Serial Switch
  • RS-232/V.24 interface
  • 4 Channel Serial Switch
  • Channel selection with RTS or digital signals
ld-34