We have expanded our CW-300 series for test bench technology with the CW-327, a module designed to measure 16 analog voltages. It is possible to measure voltages from 0 to max. 40 VDC per channel with 16 bit resolution. Device settings such as baud rate of the CAN bus, output transfer rate, voltage ranges and transmission modes can easily be configured via CAN messages. All 16 inputs are sampled synchronously and issued on the CAN bus.

Consequently, the CW-327 is particularly suited for performing component tests and simulations on HiL test benches. Furthermore, it is practical to deploy this model in all other situations in which voltages are to be measured in close proximity to the test specimen. The close proximity to the test specimen makes it possible to reduce cabling costs and reduce susceptibility to EMI noise.

In conjunction with the bus technology modules CW-101 and CW-102 it is possible to transfer measurement data via USB or Ethernet to a PC on the one hand, and to alter the configuration of the module on the other. A software API written in C/C++ and C# facilitates incorporating the module in proprietary programs.


  • 16 single-ended inputs or 8 differential inputs
  • Input voltages configurable between 0-40 VDC
  • 16 bit resolution per channel
  • Analog anti-aliasing filter
  • Measurement data output via CAN bus
  • Synchronous sampling of all channels
  • Overvoltage, polarity reversal and short-circuit protection
  • Easy to extend and scale channels

Technical Data


Number: 16 channel single-ended or 8 channels differential
Voltage ranges: 0 VDC to 40 VDC (max.)
Further measurement ranges hardware configurable
Sampling rate: 125 kHz
Resolution: 16 bit per channel
Accuracy: 10 mV
Output rate: 500 Hz (default), max. 1 kHz via CAN-Bus configurable,
Higher output rates on request


Number: 1
Type: ISO 11898-2 (highspeed)
CAN-protocol version 2.0 A and 2.0 B, supports SAE J1939 (29-bit indentifier) 
Data rate: 50, 100, 125, 250, 500, 800 and 1000 kbit/s
Termination: 120 Ohm, optional activation via jumper

Power Supply

Supply voltage: 7 VDC to 30 VDC
Current consumption: 100 mA at 12 VDC

Environmental conditions

Temperature range operation: -20 °C to +65 °C
Temperature range storage: -20 °C to +85 °C
Relative humidity: 35 % to 85 % non-condensing

General information

Housing: 45 mm-DIN-top-hat rail housing
Dimensions: 100 mm x 125 mm x 55 mm
Weigth: 180 g


Datasheet CW-327

Download (PDF)

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