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FOUNDATION Fieldbus Diagnostics Module

FOUNDATION Fieldbus Diagnostics Module

FOUNDATION Fieldbus network diagnostics has never been so open and easy. The ComBricks Diagnostic Module is able to permanently check the condition of the H1 physical layer. By means of a web server the signal quality of the connected devices can be inspected and emails inform the user about critical events. Notifications and remote access assure an optimal network uptime and reduced maintenance costs.

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The ComBricks FOUNDATION Fieldbus Diagnostics Module is not an active device and therefor does not require an address. It passively measures the network condition and can be wired parallel or series to/in an existing H1 segment.

FF modules can be combined with PROFIBUS DP and PA diagnostics modules to offer a complete installation overview to the user.

FOUNDATION Fieldbus Module - Segments null



This product is UL-listed. Read more about UL-certification.


Technical specifications

Web server

  • Oscilloscope images of all connected devices
  • Bar graph of all connected devices
  • Last, Min, Max values of the bus signals
  • DC voltage, DC current and signal jitter
  • Email on low bus signals
  • Live list


  • 33 VDC measureable bus voltage
  • 500 mA measureable bus current
  • 10 mA current consumption
  • Termination is NOT integrated
  • 32 devices (depends on current consumption)
  • 31.25 kbps MBP signal
  • 1900 m cable length (depends on trunk current)


  • 2 Removable OUT connectors (1-on-1)
  • 1 Removable IN connector (for current measurement)
  • < 2.5 mm2 wire diameter (stranded or solid core)
  • 2 removable FF screw terminals (1-on-1)


  • 10 FF modules (positioned in the first 10 slots)
  • 350 mA current consumption per module
  • Power supply: provided through the backplane
  • Compatible backplane units: 101-200011, 101-200012, 101-200023, 101-200024, 101-200027
  • Cable length: Max. 1900 m cable length (FF specifications)

Oscilloscope specifications

  • AC FF voltage: 4 MS/s, resolution 7.5 mV, range -0.95 .. 0.95 V
  • DC FF voltage: 1 kS/s, resolution 75 mV, range -38 .. 38 V
  • DC FF current: 1 kS/s, resolution 1 mA, range 0 .. 1024 mA


  • Diagnostic LEDs
  • Required Head Station firmware: V1.279 and later
  • Operating temperature: 0..60 °C
  • Dimensions (LxWxH): 115 x 100 x 25 mm (without backplane)
  • Weight: 133 g
  • Operating temperature: 0 .. 60 °C
  • Head station firmware: 1.279 and higher
UL listed

Want more information? Ask us.

Pascale Noyens NLD, ENG, GER, FR

Pascale Noyens

Sales Manager
T: +31 (0)174 671800


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  • Certified PROFIBUS Engineer

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  • PROFIBUS Troubleshooting & Maintenance

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    The PROFIBUS Troubleshooting and Maintenance training course is fully concentrated on those who install and maintain PROFIBUS installations.

  • FREE ProfiTrace Training

    This free training is concentrated on the number 1 troubleshooting tool for PROFIBUS networks.

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