Western Telematic PLS-345 manual Monitoring a Contact, Monitoring a Switch or Relay

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Section 9: Application Examples

Figure 9.3: Monitoring a Switch or Relay

9.2. Monitoring a Contact

In this application, the PLS will monitor a switch or contact. When the contact closes (signal goes low) for more than one minute, the PLS will automatically switch module 1 to the "B" position. Later, if the contact returns to the open position, the PLS will return circuit 1 to the "A" position.

Note: This example could also be used to monitor a contact or switch that is normally closed. To automatically switch A/B circuits when a contact is opened, use item 3 (Switch if Level) in the Monitor Mode Parameters Menu (Section 5.7.2) to select the "1 - High" option.

1.Connect Line from Data Device: Connect a line from the contact to the Monitor Input Connector as shown in Figure 9.3.

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

9-3

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Contents PLS-345 Page Shock Hazard Do Not Enter Nameplate Power WarningVentilation Enclosed RacksTable of Contents Application Examples Command SummaryIntroduction Monitor ModeApplications Typographic ConventionsFront Panel Unit DescriptionBack Panel Back PanelUnit Description PLS-345 Physical Layer Switch Users Guide Quick Start / System Overview $ telnet 192.168.168.168 Enter Modem & Console Port Access Factory set PLSCircuit Status Screen Command Help Screen System Mode Initialization InstallationPower Supply Connection Connecting a PC to the Console Port Connecting Common and A/B LinesConnecting the Network Cable Connecting an External ModemSystem Mode and User Mode SetUp and ConfigurationCommunicating with the PLS-345 SetUp and Configuration PLS Command/Menu Conventions Defining General Parameters SetUp and ConfigurationPLS-345 Physical Layer Switch Users Guide SetUp and Configuration Circuit Parameters Menu Circuit ParametersNetwork Parameters Network Parameters Menu IP Security Implementing IP SecurityExample 1 Deny access to all hosts except Selecting Monitor Mode Parameters Monitor ModeHardware Configuration Monitor Mode Parameters Menu Switch if Level 1 High Switch to Position B Return On Save Configuration Parameters Circuit Status Screen Status ScreensPLS-345 Physical Layer Switch Users Guide Port Network Status ScreenPLS-345 Physical Layer Switch Users Guide Operation Manual A/B SwitchingEnter Code Activated A/B Switching/A Command and the /B Command Enter or /B n EnterCommand Confirmation Prompt /D CommandMonitor Mode Sending Parameters to a File Saving and Restoring Configuration Parameters Restoring Saved Parameters Application Examples Monitoring Signal Drop and/or Power LossAUX Port Connection Monitoring a Contact Monitoring a Switch or RelayItem 6 Circuits to Switch Enable the Monitor Mode at circuit Display Circuit Status Command SummaryDisplay Commands Display Help ScreenView/Set Circuit Parameters Configuration CommandsSN Display Network Status View/Set General ParametersView/Set Network Parameters View/Set Monitor Mode ParametersDL Download Configuration to File Switch Circuit n to Line B Control CommandsSwitch Circuit n to Line a Command Format /T Enter Command Arguments Set Circuits to DefaultReset Network Interface Command Format /D Enter Command ArgumentsExit/Disconnect Command Format /X Enter Command ArgumentsModem Port Interface Interface DescriptionsConsole Port Interface Figure A.3 Common Ports and A/B Ports Common Ports and A/B PortsSize SpecificationsSwitching Trademark and Copyright Information Customer ServiceIndex Index-2 Page Sterling Irvine California 949 586-9950 Toll Free