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IBS485HV: 5-Port Serial Communications Multiplexer


"Let me spin a very large
RS485 network for you!"

  • This auto transmit unit features 5 isolated(3KV) RS485 ports in 2 wire half-duplex communications mode, and 1 RS232 port.

  • As a true repeater, data received on any one port is transmitted to all other ports. Thus each port becomes the the start of an isolated and buffered "star configuration" branch, expanding the network while observing the RS485 loading rules.

  • RS485 drivers allow 32 single unit loads at 4000 ft. and data rates up to 115.2 Kbps on each port.

  • Galvanic Isolation of 3KV and robust transient suppressors help protect against destructive transients often found in industrial and outdoor environments .

  • Transparent to all asynchronous data, with any combination of data, parity, and stop bits at data rates up to 115.2Kbps. Contact factory for faster speed enhancements.

  • Fast auto turn-around, from transmit to receive mode, requires no software delays and eliminates timing problems and data collisions.

  • Efficient onboard polarity protected power regulator accepts supply voltages from 9 to 35 VDC, at 2.5 Watts max.

  • Jumpers allow the RS485 bias termination resistors, the RS485 Rx and Tx enables, and the RS232 DTE/DCE mode to be user configured. The 5 isolated RS485 ports can be reconfigured as independent repeaters of 2 to 4 ports.

  • The user connections are RJ11/12(RS232), 3 pin removable terminal strips(RS485), and 2 pin terminal strip/2.1 mm barrel connector.

  • The user connections are 3 pin removable terminal strips(RS485), a 2 pin terminal strip/2.1 mm barrel connector(power), and an RJ11/12(RS232) .

  • The RS232 converter port provides an interface to a computer or host controller. When used as a converter this port transmits and receives serial data through all the isolated RS485 ports

  • Accessories available are a 12VDC Switching Power Supply(Wall Wart), and a 7ft DB9F to RJ11/12 RS232 cable.

  • Six(6) easy mount through hole standoffs, which accept #6 hardware, are provided on the circuit board.

  • Conformal Coating Available (Call us: 513-874-4796)

  • We also make similar isolated multi-repeaters in 7 Port(ICSX7HV), and 10 Port(ICS485HV) versions.

General Description:

The IBS485HV "SPIDER" is an automatic repeater that expands an RS-485 serial communication network by increasing its maximum distance and number of nodes. The repeater connects 5 RS-485 lines and transfers data in both directions on each line. On receiving data from one line, the repeater automatically regenerates and retransmits the data on the other lines. Data is transferred at the bit level so all formats are supported and with nearly no delays. Each of the 5 lines has it's own set of control jumpers that can be used to manually enable it's RX and/or TX capabilities, adjust the bias and add termination. Protection for the overall network is provided through isolation on each of the lines. All the repeater lines and controller circuitry can be powered by a single supply with an output in the range of 9 to 35VDC at 5 watts max.

Our unique auto transmit feature removes the burden of slowing down or spacing transmitted characters. After a character is transmitted, the RS485 transceiver is rapidly returned to the receive mode.

One RJ11/12 telephone style modular connector for the RS232 port, 3 pin removable terminal strips for the 5 RS485 ports, and a 2 pin removable terminal strip and 2.1mm barrel connector for the supply power.

Need something special? Please contact us. We have additional isolated and non-isolated converters, repeaters, and repeater hubs. Units are generally stock to 2-3 business days for shipment. We design and manufacturer our entire product line, and offer technical support for our units, and can offer system recommendations for your application. Please give us a call: 513-874-4796

Related Files:

pdf icon IBS485HV.pdf Multi-repeater schematic
pdf icon IBS485HVss.pdf Physical Drawing

Physical Properties and Features:

Additional information coming soon!


Additional information coming soon!

Options and Ordering Information:

IBS485HV $359.00 ea. (Circuit board only)

Additional information coming soon!

Need a different configuration or more information? Give Ron a Call at 513-874-4796 or 513-638-0228(Cell)

Webstore: IBS485HV

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