Owners manual

Modbus Protocol User Guide 18
3: Monitor Mode and Firmware Upgrade
The easiest way to upgrade your protocol firmware (or “reflash”) is to use the
DeviceInstaller utility that is on your software CD-ROM. You can also download
DeviceInstaller from the Lantronix web page.
The User Guide for the Device Server explains two other ways to reflash. You can do
it serially with HyperTerminal or directly by Ethernet with a Trivial-File-Transfer-
Protocol (or TFTP) Client. The TFTP method takes just a few seconds – much faster
than the 5-plus minutes required serially. With all protocol firmware, use the TFTP
destination filename of .ROM (in caps).
There are important differences between the industrial protocol firmware files and the
standard Lantronix firmware files. Although the hardware may be the same, you will
not be able to download a standard Lantronix firmware (such as the standard “3Q” or
the older Modbus versions 1.0, 1.1, or 1.2). These firmware files are rejected with the
error “Sorry, that firmware not supported.” And although you can download any
industrial firmware to non-IAP Lantronix Device Servers, they will not function. When
started, an industrial firmware on the wrong hardware will blink the red LED, and you
will see the error message “Sorry, that firmware not supported” from the serial port.
The industrial firmware also has blocked the “SF” command within the Monitor.