
Documentation Number: ESP902-2303 Manual Table of Contents i
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
Table of Contents
Chapter 1: INTRODUCTION................................................1
Features ....................................................................................1
Communication Modes............................................................2
Direct IP Mode...........................................................................2
Virtual COM Mode.....................................................................2
Heartbeat...................................................................................3
Quick Start ................................................................................3
Default ESP902 Settings..........................................................4
Specifications ...........................................................................5
Protocols...................................................................................5
Indicators ..................................................................................5
Connectors ...............................................................................5
Serial Signals............................................................................5
Power & Environment ..............................................................5
Hardware and Included Accessories......................................6
Optional Accessories...............................................................6
Configuration Options .............................................................6
Chapter 2: HARDWARE......................................................7
Ethernet Connection ................................................................7
DC –In ........................................................................................8
Reset Button .............................................................................8
Mode Switches – ESP Server Port 1.......................................8
RS-485 Mode.............................................................................9
RS-422 Mode.............................................................................9
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