Interfacing Using Hyperterminal; Upgrading Firmware; Cycling Power; Hyperterminal - GE PQMII Instruction Manual

7.2

Interfacing Using Hyperterminal

7.2.1

Upgrading Firmware

7.2.2

Cycling Power

7.2.3

Hyperterminal

7–8
When upgrading firmware, the PQMII may appear to lockup if there is an interruption on
the communication port during the upload process. If the PQMII does not receive the
necessary control signals for configuration during firmware upload, it could remain in a
halted situation until reinitialized. The steps used by the EnerVista PQMII Setup Software to
upload firmware to the PQMII are as follows:
1. Prepare the PQMII for firmware upgrade by saving setpoints to a file.
2. Erase the flash memory and verify it to be blank.
3. Upload the new firmware.
4. Verify the CRC when upload is complete.
5. Run the new code.
If the PQMII is interrupted prior to erasing the flash memory, it could be halted in a mode
where the display will read
If the computer being used to upload firmware has a screen saver enabled, and the screen
saver operates during the upload process, the communication port will be interrupted
during the launch of the screen saver. It is recommended to disable any screen saver prior
to firmware upload.
There are two ways to alleviate this condition: one is to cycle power to the PQMII; the
second is to interface with the PQMII using a terminal program, such as Hyperterminal,
and perform the upload process manually.
Remove and then re-apply control power to the PQMII. The PQMII should then run the
existing firmware in its flash memory. If the PQMII does not run the firmware in flash
memory, attempt the second method using Hyperterminal.
Hyperterminal is a terminal interface program supplied with Microsoft Windows. The
following procedure describes how to setup Hyperterminal.
Run the program "hypertrm.exe" which is usually located in the
Accessories folder of your PC.
A Connection window will appear asking for a name. Use a name such
as "PQMII" for the connection and click on OK. The following window
appears.
PQMII FLASH LOADER ENTER TEXT "LOAD"
PQMII POWER QUALITY METER – INSTRUCTION MANUAL
CHAPTER 7: APPLICATIONS
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