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Chapter 8
Documentation Number: ESP902-2303 Manual
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Chapter 8: UPGRADE MODE
New ESP902 firmware may become available through our web site for
installation into the ESP902. The software can be downloaded to the ESP902
using either the Virtual COM or hardware COM port.
Using Virtual COM or Serial Connections
Make a folder to receive the firmware file. Download the compressed software
file from our website to your folder. Unzip or expand the file into the (.hex)
format so it will be ready to download to the ESP902.
Before Setting the ESP902 to Upgrade mode, we recommend setting the ESP
Server baud rate to 115.2K if using a hardware COM port. This will provide the
fastest download.
Set ESP902 Dip Switches to Upgrade, Switch 1 OFF, Switch 2 ON, and
Switch 3 ON
. (As shown here)
If using a Virtual COM port to upgrade, identify the virtual COM number and
address used for the Multi-Interface port.
If connecting directly to a Computer serial port, connect a null modem cable
(Appendix B) between the Computer RS-232 port and the ESP902 Multi-
interface (ESP Port 1) serial port.
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