Application Examples | Western Telematic PLS-345 manual

9.Application Examples

9.1.Monitoring Signal Drop and/or Power Loss

In this application, the PLS-345 will monitor the DTR signal from a data device. If the signal drops or the data device loses power for more than one minute, the unit will automatically switch circuits 2 and 3 to the "B" line.

Figure 9.1: Monitoring Signal Drop

1.Connect Line from Data Device: Connect a line from the Data Device to the Monitor Input Connector as shown in Figure 9.1.

2.Set Monitor Selector Switch: Locate the Monitor Selector Switch on the PLS back panel. Slide the switch to the "RS232" position.

9-1

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Western Telematic PLS-345 manual Application Examples, Monitoring Signal Drop and/or Power Loss

Contents

PLS-345 Page Shock Hazard Do Not Enter Nameplate Power Warning Ventilation Enclosed Racks Table of Contents Application Examples Command Summary Introduction Monitor Mode Applications Typographic Conventions Front Panel Unit Description Back Panel Back Panel Unit Description PLS-345 Physical Layer Switch Users Guide Quick Start / System Overview $ telnet 192.168.168.168 Enter Modem & Console Port Access Factory set PLS Circuit Status Screen Command Help Screen System Mode Installation Power Supply ConnectionInitialization Connecting the Network Cable Connecting Common and A/B LinesConnecting an External Modem Connecting a PC to the Console Port System Mode and User Mode SetUp and Configuration Communicating with the PLS-345 SetUp and Configuration PLS Command/Menu Conventions Defining General Parameters SetUp and Configuration PLS-345 Physical Layer Switch Users Guide SetUp and Configuration Circuit Parameters Menu Circuit Parameters Network Parameters Network Parameters Menu IP Security Implementing IP Security Example 1 Deny access to all hosts except Monitor Mode Hardware ConfigurationSelecting Monitor Mode Parameters Monitor Mode Parameters Menu Switch if Level 1 High Switch to Position B Return On Save Configuration Parameters Circuit Status Screen Status Screens PLS-345 Physical Layer Switch Users Guide Port Network Status Screen PLS-345 Physical Layer Switch Users Guide Operation Manual A/B Switching /A Command and the /B Command Code Activated A/B SwitchingEnter or /B n Enter Enter Command Confirmation Prompt /D Command Monitor Mode Sending Parameters to a File Saving and Restoring Configuration Parameters Restoring Saved Parameters Application Examples Monitoring Signal Drop and/or Power Loss AUX Port Connection Monitoring a Contact Monitoring a Switch or Relay Item 6 Circuits to Switch Enable the Monitor Mode at circuit Display Commands Command SummaryDisplay Help Screen Display Circuit Status SN Display Network Status Configuration CommandsView/Set General Parameters View/Set Circuit Parameters View/Set Monitor Mode Parameters DL Download Configuration to FileView/Set Network Parameters Control Commands Switch Circuit n to Line aSwitch Circuit n to Line B Reset Network Interface Set Circuits to DefaultCommand Format /D Enter Command Arguments Command Format /T Enter Command Arguments Exit/Disconnect Command Format /X Enter Command Arguments Interface Descriptions Console Port InterfaceModem Port Interface Figure A.3 Common Ports and A/B Ports Common Ports and A/B Ports Specifications SwitchingSize Trademark and Copyright Information Customer Service Index Index-2 Page Sterling Irvine California 949 586-9950 Toll Free