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Chapter 4 PAS Application Software
Upgrading Device Firmware
Series PM172 Powermeters
103
Upgrading firmware is only supported through the Modbus RTU and
Modbus/TCP protocols, so your serial port or modem port should be put into
Modbus RTU mode. If you are upgrading firmware through the Ethernet port
and your device has a firmware build lower than 7, the device Ethernet port
should also be configured to operate through the Modbus/TCP port 502.
To download a new firmware file to your device:
1. Ensure that the communication port you are connected
through to the meter operates in Modbus RTU mode.
2. If the port is configured for a different protocol, put it into
Modbus RTU mode either from the front display, or
remotely through PAS. If you are connected to the meter
through a serial interface, it is recommended to set the
port baud rate to 115,200 bps. See “Configuring
Communications in your Meter” on how to remotely
change the protocol and baud rate in your meter.
3. Check the On-line button on the PAS toolbar, select Flash
Downloader from the Monitor menu, and then confirm
changes.
4. Point to the firmware upgrade file for your meter, click
Open, and then confirm upgrading the meter. You are
asked for the password regardless of the password
protection setting in your meter.
5. Type the meter password, and click OK. If you did not
change the password in the meter, enter the default
password 0.