Description

The MLL336-BEP-D is a voiceband modem combined with an Ethernet bridge for connectingproducts equipped with an Ethernet port or LANs over voice-grade analog leased lines, PCM channels or copper wire. The modem offers a transparent link for Ethernet protocols regardless of the higher level protocol.
The LLM-336.Eth was designed for industrial applications: it can be powered from any DC or AC power source and operates within a temperature range of -25..+70°C
The modem is available in 3 versions:
· MML336BEP-D in compact housing suitable for Dinrail mounting
· MML336BEP-S in rugged steel desktop housing.
· MML336BEP-R set of rack cards for use in the the 19″ UCF-16.3 card frame.
Features
· Operates over PCM channels, microwave links, analog leased lines and dry or conditioned
copper wire.
· 2-wire and 4-wire line operating modes.
· No configuration, very easy set-up, “plug and play”.
· Automatic learning Ethernet bridge.
· Protocol independent.
· No routing configuration needed.
· Ethernet port supports 10/100baseT, Auto-MDI/MDIX.
· Supports SCADA protocols like Modbus/TCP, DNP3/IP and IEC60870-5-104.
· V.34 modem technology for line rates up to 33.6 kbit/s.
· Isolated supply voltage input (ac and dc) for industrial applications.
· 11..36 Vdc (11..28 Vac) or 18..60Vdc (18..30Vac) supply voltage.
· DIN rail mounting or panel mounting for D-version.
· Extended temperature range -25..+70°C.
Application Areas
Be it for connecting just two Ethernet devices, for connecting a remote Ethernet device to a LAN or even for connecting two LANs, for environments where there is no demand for high bandwidth, the MLL336-BEP-D can be used for any device equipped with an Ethernet port: from Personal Computer to PLC.
The MLL336-BEP-D is 100% protocol independent. It will bridge TCP/IP, AppleTalk,
DecNet, Netbui, or any protocol that can be transported over Ethernet (with some
exceptions for protocols that rely on very short latency times). This makes the modem easy to set up.
LAN to LAN, Device to LAN or Device to Device connections
Because of the automatic MAC address filter, only those Ethernet packets destined for the remote end are send over the modem link. All other packets are blocked by the bridge circuit. In this way, no bandwidth is consumed by data traffic between devices at the same location of the modem.
Configuration
The MLL336-BEP-D is configured by means of DIP switches. Basically only the type of line (2 wire or 4 wire) needs to be set. If needed for link reliability, the maximum modem line rate can be reduced, also by means of DIP switches. The modem will work over various types of “voice-band” connections but also over a single pair of copper wire for distances of over 20 km (depending on wire gauge).
Power supply
The MLL336-BEP-D is equipped with an internal galvanic isolated power supply that can be powered from any 11 to 36Vdc or 18 to 60Vdc source. For 100-240 Vac mains operation a power adapter or power supply unit is used.
Extended temperature range
The modem can be used in many environments. It is suitable for operating at ambient temperatures ranging from -25 to +70C.