User manual
Manual Documentation Number: ESP904-0504  Table of Contents  iii 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com 
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
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PGRADING VIA ESP904 MANAGER....................................................................... 47 
Preparing the Software....................................................................................... 47 
Upgrading the Firmware .................................................................................... 48 
CHAPTER 9: USING CONSOLE MODE ............................................................. 51 
CONSOLE MODE SETUP ........................................................................................... 51 
Navigating the Configuration Menu ................................................................... 52 
Using a Password ............................................................................................... 54 
CHAPTER 10: USING THE WEB SERVER ........................................................ 55 
SETTING SERVER PROPERTIES ................................................................................. 55 
APPENDIX A: RS-232 CONNECTIONS............................................................... 57 
ESP904 DB-9 PIN-OUTS IN RS-232 MODE .............................................................. 57 
RS-232 Straight-through Cable Connections...................................................... 58 
RS-232 Crossover (null modem) Cable Connections.......................................... 58 
RS-232 Straight-through DB-9 to DB-25 Conversion Connections.................... 59 
RS-232 Crossover DB-9 to DB-25 Conversion Connections.............................. 59 
RS-232 DTE Loopback Connections................................................................... 60 
APPENDIX B: RS-422 CONNECTIONS............................................................... 61 
ESP904 DB-9 PIN-OUTS IN RS-422 MODE .............................................................. 61 
APPENDIX C: RS-485 CONNECTIONS............................................................... 65 
ESP904 DB-9 PIN-OUT IN RS-485 MODE................................................................ 65 
APPENDIX D: NETWORK CONNECTIONS...................................................... 67 
STANDARD ETHERNET CABLE RJ-45 PIN-OUT......................................................... 67 
CROSSOVER ETHERNET CABLE RJ-45 PIN-OUT ....................................................... 68 
iv  Table of Contents  Manual Documentation Number: ESP904-0504 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com 
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com










