Cryo-con Model 24C Appendix B: Updating Instrument Firmware
Appendix B: Updating Instrument Firmware
Updates require the use of the Cryo-con Firmware Update Utility software and a hex
file containing the updated firmware. These are available on the Internet.
i Note: Updating firmware in any instrument is not entirely
without risk. Please only perform the procedure when some down
time is available.
The update will abort on the detection of a hardware malfunction.
Also, the update may change instrument features that you are
currently using in a different way. Factory defaults settings are
restored that will erase any existing user calibration curves or PID
tables.
Discussion
Cryo-con instruments have two blocks of flash type program memory. In the standard
configuration, the Internal block contains a boot-loader program and the External
block contains the actual instrument firmware.
During the normal power-up sequence, the boot-loader tests the external flash
memory and then transfer execution to it in order to run the instrument's firmware.
From there, the Cryo-con firmware update utility can be used to update instrument's
firmware.
The firmware update sequence is as follows:
1. Connect the LAN port of the instrument to your PC, turn the instrument ON
and then run the FWutility.exe.
2. Click the Connect button to connect the PC to the instrument using TCP/IP. If
there is an error, a dialog box will appear. Correct the problem and re-try.
3. While connected, the instrument still functions normally. Click on the Set
Flash Mode button to place the instrument in the firmware update mode. In
this mode, the instrument executes the boot-loader from the Internal flash
memory and is waiting to program the External memory with the new
firmware.
4. Click Connect again and then click the Program / Verify button to start the
update process.
5. When the update process is complete, the instrument will automatically reset
itself and start running the updated firmware.
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