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HG-S communication unit

  • HG-S communication unit

Direct transfer of high-precision measurement values: new communication unit for the HG-S series

The new RS485 communication unit for the HG-S sensor series is used to transfer high-precision measurement values directly, making data traceability easier than before. Communication does not only work for measurement values, but also for parameters, making it easy to manage inspection results and identify causes in the event of a failure.

Installation example

In a network installation, a PLC and a computer can be used to control a number of stations remotely. Each station consists of a master, up to 14 slaves, and the SC-HG1-485 communication unit. The maximum number of stations is limited by the communication protocol selected: 99 stations for MODBUS (RTU/ASCII) and 64 stations for MEWTOCOL-COM.

  1. Station consisting of a master sensor, up to 14 slave sensors, and the SC-HG1-485 communication unit
  2. Two protocols available:
    - MODBUS (RTU/ASCII) for connection of up to 99 stations
    - MEWTOCOL-COM for connection of up to 64 stations
  3. Programmable controller FP7 series
  4. PC for analysis and cause investigation
  5. Web server for data logging


Product Feature

Measuring the dimensions of automotive parts

Product Feature

Measuring the flatness of a tablet surface

Order guide

Product name Model No. Description
RS485 communication unit SC-HG1-485 Communication unit for RS485 communication.
Two protocols available:
  • MODBUS (RTU/ASCII) for connection of up to 99 stations
  • MEWTOCOL-COM for connection of up to 64 stations


Product name RS485 communication unit for measurement sensors
Model No. SC-HG1-485
Applicable standards EMC directive
Compatible controller HG-SC□
Supply voltage 24V DC ±10% including ripple max. 10% (P-P) (within specified power supply voltage range)
Note: The power is supplied from the master sensor.
Current consumption Max. 40mA
Communication method Two-wire half-duplex communication
Synchronization method Start-stop synchronization
Communication protocol MODBUS (RTU, ASCII), MEWTOCOL-COM
Communication speed 1.2 kbit/s, 2.4 kbit/s, 4.8 kbit/s, 9.6 kbit/s, 19.2 kbit/s, 38.4 kbit/s, 57.6 kbit/s, 115.2 kbit/s
Electrical characteristics Complies with EIA RS-485
Number of stations connectable to a host 1 to 99 units when MODBUS (RTU/ASCII) is used
1 to 64 units when MEWTOCOL-COM is used
Number of connectable sensors per station Maximum of 15 sensors (1 master, 14 slaves) per SC-HG1-485 unit
Stop bit length 1 bit, 2 bits
Parity check None, even, odd
Data length 8 bits (RTU), 7 bits (ASCII)
Pollution degree 2
Operating altitude Max. 2000m
Degree of protection IP40 (IEC)
Ambient temperature -10 to +45°C (no condensation or ice), storage: -20 to +60°C
Ambient humidity Operation and storage: 35 to 85% RH
Insulation resistance Min. 20MΩ, with 250V DC megger between all supply terminals connected together and enclosure
Withstand voltage 1000V AC for one minute between all supply terminals connected together and enclosure
Vibration resistance 10 to 150Hz frequency, 0.75mm amplitude in X, Y and Z directions for two hours each
Shock resistance 98m/s² acceleration (10G approx.) in X, Y and Z directions five times each
Material Case: polycarbonate
Maximum length for communication cable Max. 1200m between SC-HG1-485 (terminal) and PLC
Weight (approx.) Net weight: 75g, gross weight: 120g.
Accessories Termination resistor switching jumper: 1 pc.

Product downloads