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McCrometer Firmware Updates

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This page provides a comprehensive record of firmware updates for the McCrometer FlowCom, ProComm GO, and ProComm Max devices. Each update includes detailed descriptions of enhancements, affected components, and patch notes.

Click on a specific product to view the improvements and fixes, and download the corresponding update package.

 

FlowCom | Version 1.1.0

Download File FlowCom_Firmware_v1.1.0 
Release Date 3/3/26
Patch Notes
  • Increased max length of serial number and tag.
    • Max serial length is now 16 chars.
    • Max tag length is now 19 chars.
  • Added coincell battery threshold adjustment command (CONFIG.COINDEAD,value is in mV) and lowered default coincell battery threshold to 2000 mV.
  • Moved AMI handling before USB handling.
  • Added DFLLOOB handling.
  • FRAM loading sequence now checks for and accommodates relocated serial number strings.
  • SD card now initializes at 400KHz to improve compatibility.

ProComm Go | Version 2.9

Download File ProComm-Go-Firmware-v2.9
Release Date 3/24/25
Patch Notes
  • Updated pulse total tracking
  • Updated RTC init

ProComm Max Transmitter | Version 1.5.2

Download File

ProCommMax-Transmitter-Firmware-v1.5.2

Release Date 8/21/25
Patch Notes
  • Added protection against setting calibration variables to invalid values.
  • Flow GPM command now correctly scales unit.
  • Corrected SD self update sequence to correctly format last page when upgrading transmitter.
  • Added support for alternate update file name format.

     

ProComm Max Converter | Version 1.5.3

Download File ProCommMax-Converter-Firmware-v1.5.3
Release Date 2/26/26
Patch Notes
  • Improved Communications with Transmitter.
  • Updated code-based packet handling.
  • Corrected packet type setting of response packets.
  • Added flow velocity unit.
  • Message is printed on USB connection.
  • Added pin configuration for J1 header.
  • Minimum flow cutoff reduced.

Firmware Update Instructions with McCrometer Config Tool

Download File Firmware-Update-Instructions-ProCommMax
Release Date 8/1/25
Patch Notes
  • Instructions for updating McCrometer ProComm Max firmware

Archived Versions

Device Version Release Date Patch Notes
FlowCom 1.0.7 6/20/25
  • Sends totalizer values to the right of the decimal place over exact read
  • Website updated to show up to 3 places to the right of the decimal place
ProComm Max Converter 1.5.2 8/21/25
  • Added protection against setting calibration variables to invalid values.
  • Flow GPM command now correctly scales unit.
  • Corrected SD self update sequence to correctly format last page when upgrading transmitter.
  • Added support for alternate update file name format.
ProComm Max Transmitter 1.5.1 7/23/25

  • Added DFLL out of bounds interrupt tracker (both xmtr and conv).

    a. COMM.DFLLOOB can be used to check how many times the interrupt has been captured.

    b. COMM.DFLLOOBRST can be used to reset the count to zero.

  • Added diagnostic and event logging when totalizer value decrease is detected.
ProComm Max Converter 1.5.1 7/23/25
  • Communication reliability between Transmitter and Converter
ProComm Max Converter 1.4.2 4/22/25
  • Added Damping feature in menu
  • Fixed potential bug for 50Hz power frequency causing converter crash
  • Improved communication
  • Added communication with Ethernet daughter card
ProComm Max Transmitter 1.4.11 6/24/25
  • Pulse Output Improvements
  • Added COMM.ALARMCNT command, allowing the user to control when the xmtr-conv communication error alarm appears.
  • Updated how pulse output is reset after totalizer is changed via USB command.
  • Corrected AMI decimal selection.
  • Improved timeout tracking when getting initial converter data.
  • Additional improvements to initial converter data getting sequence.
ProComm Max Transmitter 1.4.2 4/22/25
  • Added Damping feature in menu
  • Fixed potential bug for 50Hz power frequency causing converter crash
  • Improved communication
  • Added communication with Ethernet daughter card