• 4-Port RS-485 Hub

TD-1204

4-Port RS-485 Hub

TD-1204 4-Port RS-485 Hub is a professional design for star-shaped wire layout in complex electromagnetic environment, RS-485 bus, large-scale systems. The RS-485 bi-directional transparent hub transmission, can divide one-way RS-232 bus or RS-485 bus into 4-way RS-485 bus, or put 4-way RS-485 signals all together to one-way RS-232 bus or RS-485 bus. And each port has optical isolation, short circuit, open circuit protection. In the system failure time, the built-in controller can cut off a timely faulty port, to ensure that every port of RS-485 Hub can work independently. every port can connect up to 32 nodes, extend the 1200 meters RS-485 signal. it is good choice to change the simple structure of RS-485 bus.


  • Specification & Feature
    Feature
    • Private input RS-232 and RS-485 2 port, 4 output RS-485 port.
    • Baud rate 300~115200bps auto adaptation, eliminating the trouble of manually set the baud rate.
    • Each RS-485 port has lightning protection and surge protection funcation.
    • Each RS-485 port work independently.
    • Support two kinds of external power supply.
    • More than 5 TD-1204 can be cascaded.
    • Each port can be accessed by 32 standard RS-485 devices(nodes).
    • Support zero-delay auto-conversion transmit and receive.
    • Unique auto-detection circuit.
    • Supports hot-swap function, plug and play.
    • Able to adapt to the user of any application software.
    • can be used as 4 units RS-232 to RS-485 converters.
    Specification
    • Standard: Support EIA RS-485, RS-232C standard.
    • Baud rate: 300~115200bps auto adaptation.
    • Transmission distance: extend 1200m each on RS-485 side, 5m on RS-232 side.
    • Data Flow Control: RS-232 port neednot RTS/CTS hardware flow control, automatic flow control
    • Loading device: 32,64,128 nodes.
    • Transmission medium: UTP-Unshielded Twisted Pair or RS-485 Wire
    • Work methods: asynchronous, point to point, 2 wire half-duplex.
    • Isolation Voltage: 3.5KV
    • Dimension: 120mm x 85mm x 26mm.
    • Environment: -20 ℃ ~ 60 ℃ working temperature, 5%-95% relative humidity.
  • Datasheet
    datasheet of 4-Port RS-485 Hub TD-1204_Datasheet.pdf



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