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New Bus Probe Implements Digital Input Over Modbus

03/03/2023

Newest member of our RS485 Modbus Sensor family — Bus Probe #06. Having a sensor input in the compact Bus Probe form factor simplifies system wiring and installation. Multiple BP#06s can be deployed in a distributed fashion and close to the signal sources.

BP#06 is a low-power, unidirectional opto-isolated digital input (DI) designed for use with 2- or 3-wire sensors. It's optimized for 24VDC industrial inputs and is equipped with high-voltage and reverse polarity protection. It features two sampling modes — instant and digitally filtered — for greater flexibility when designing your products.

Main Features

BP#06 (opto-isolated digital input)

  • Unidirectional optically isolated digital input (DI) suitable for 2/3-wire sensors with reduced power consumption
  • Optimized for 24VDC industrial inputs, especially Type-3 sensors
  • Input V-I characteristics:
    - Wide input range compliant with IEC 61131-2 Type 3 criteria
    - Input current clamped to 3.5mA
    - Vin (threshold): 11VDC ~ 12.4VDC (depending on temperature)
    - Iin (threshold): 2.2mA±0.3mA (complete voltage and temperate range)
  • Protection and safety features:
    - Protection against high-voltage transients on the line
    - Digital input reverse polarity protection up to –80VDC
    - Digital input isolation voltage: 2.5kV
    - ±65V fault and short-circuit protection for the RS485+ and RS485– lines
    - ±40V common-mode voltage range for the RS485+ and RS485– lines
    - Hot-swap protection for all terminals
  • Sampling time:
    - Instant
    - 0.25ms filtered
  • Green and red status LEDs
  • Power: 4V to 15V DC
  • Current consumption:
    - BP#01 ~ BP#04 — 2.5mA average @5V/12V with spikes of up to 6mA
    - BP#05 — 16mA average @5V/12V with spikes of up to 25mA during Modbus communications
    - BP#06:
  • Idle — 4mA average @ 5V/12V
  • Polling — 7mA average @ 5V/12V with spikes of up to 20mA
  • Dimensions, excluding connectors (L x W x H): 40 x 36 x 19mm
  • Operating temperature range: –40°C to +85°C(8)(9)
  • Internal firmware is upgradeable through XModem file transfer protocol over RS485
Documents Tech question
Tibbo Bus probes

New Bus Probe Implements Digital Input Over Modbus

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Tibbo Technology

Tibbo Technology focuses on designing, manufacturing, and marketing programmable IoT modules, boards, and controllers for the Internet of Things (IoT), Industrial Internet of Things (IIoT), and automation applications.

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Documents

  • Tibbo RS485 Modbus Sensors productbrief
Pexels thisisengineering 3913017

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