General Information

This Release Note describes the new features and changes for 4000 Series firmware version 1.22. The firmware files for the 4000 Series MMT and MPT transmitters are included with the Firmware Loader version 1.42 build 4. The expected availability of Firmware Loader version 1.42 build 4 is November 10, 2004.

Software and Hardware Relevant to this Release

Firmware Loader version 1.42 build 4 contains firmware version 1.22 for 4000 Series transmitters.

4000 Series MMT and MPT Firmware Changes

The following changes are made to the 4000 Series firmware:

  • The Differential Pressure and Static Pressure variables were being reported as bad if there was no RTD present on the 4000 Series MMT transmitters. This is corrected so only the Temperature variable is reported as bad if the RTD is missing.
  • An exception response would sometimes be returned when the 4000 Series MMT transmitters were reset using the 4000 Series Configurator or the local display. This is corrected so the firmware allows is enough time for the reset sequence to complete in the 4000 Series MMT transmitters.

Firmware Upgrade Procedure

If you are planning to upgrade the firmware in your 4000 Series transmitter to take advantage of the features and changes described above, it is recommended that the following steps be used. If you have any questions or concerns regarding this procedure contact Control Microsystems Technical Support using the information in the footer of this document.

1. Obtain Firmware Loader 1.42 build 4

Send an email to You will be contacted with the information you need to obtain this release.

2. Install New Firmware in Target 4000 Series transmitter

  • Open the Firmware Loader and establish a serial or Ethernet connection with the target controller.
  • Click the Update Firmware button and select C:\Program Files \ Firmware Loader \ Firmware in the Look in: entry box.
  • Select the firmware file, appropriate for the controller you are using, and with the version listed above and then click the OK button.
  • Read the Confirm Update dialog to ensure you are loading the desired firmware and then click the Yes button to complete the firmware installation.