Comtrol DeviceMaster DM-2000 Series Installation And Configuration Manual page 7

Troubleshooting and Technical Support......................................................................147
Troubleshooting Checklist ..................................................................................................................... 147
General Troubleshooting......................................................................................................................... 149
Testing Ports Using Port Monitor (PMon2) ........................................................................................ 151
Overview ................................................................................................................................................. 151
Testing Comtrol COM Ports................................................................................................................... 151
Testing Ports Using Test Terminal ....................................................................................................... 154
Overview ................................................................................................................................................. 154
Opening Ports ......................................................................................................................................... 154
Sending and Receiving Test Data (RS-232/422/485: 4-Wire) ............................................................... 155
Loopback Test (RS-232).......................................................................................................................... 156
Sending and Receiving Data (RS-485: 2-Wire) ..................................................................................... 156
Socket Mode Serial Port Testing ........................................................................................................... 160
Daisy-Chaining DeviceMaster 4/8/16-Port Units ................................................................................ 166
DeviceMaster LEDs ................................................................................................................................... 167
TX/RX LEDs............................................................................................................................................ 167
Network and Device LEDs ..................................................................................................................... 167
Removing DeviceMaster Security Features........................................................................................ 169
Serial Connection Method ...................................................................................................................... 169
Returning the DeviceMaster to Factory Defaults.............................................................................. 171
Clearing the Flash .................................................................................................................................. 172
Clearing EEPROM.................................................................................................................................. 172
Telnet Access .................................................................................................................................... 172
Serial Port Access............................................................................................................................. 173
Web Server Access............................................................................................................................ 173
Technical Support ..................................................................................................................................... 174
DeviceMaster Installation and Configuration Guide: 2000594 Rev. F
Table of Contents
Table of Contents - vii