Western Telematic CAS-81 manual Unit Description, Front Panel Indicators

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2.Unit Description

Figure 2.1: Front Panel Indicators

2.1.Front Panel Indicators

ÀON: Indicates power to the unit is ON.

ÁRDY: Indicates unit is Ready to operate. A steady blink indicates that the CAS-81 is operating normally.

ÂTXD: Indicates that data is being received at Control Port pin 2.

ÃRXD: Indicates that data is being transmitted out Control Port pin 3. Also indicates that data is being received by pin 2 of a selected Serial Port.

ÄRTS: Indicates that the "Request to Send" signal is present at Control Port pin 4.

ÅCTS: Indicates that the "Clear to Send" signal is present at Control Port pin 5. Also indicates that the "Clear to Send" signal is present at pin 8 of a connected Serial Port. Always high when all ports are disconnected.

ÆDTR: Indicates that the "Data Terminal Ready" signal is present at Control Port pin 20.

ÇDCD: Indicates that the "Data Carrier Detect" signal is present at Control Port pin 8. Also indicates that the "Data Carrier Detect" signal is present at pin 1 of a connected Serial Port. Always high when all ports are disconnected.

ÈSerial Ports 1 - 8: Indicates that the corresponding numbered Serial Port is currently connected.

2-1

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Contents CAS-81 Users GuideTable of Contents Applications IntroductionTypographic Conventions Front Panel Indicators Unit DescriptionBack Panel Back PanelInstallation Set DIP SwitchesData Rate Baud Selection Switches 1 through Timeout Selection Switches 4Auto Connect Serial Port 1 Switch Broadcast Mode SwitchForce CTS Switch Force DCD SwitchConnect Power Cable Connect Devices to Serial PortsConnect Control Port RS422 Line Driver OptionPower Up Command StringOperation Ascii CharactersCommand Response Port GatingOpen Port Gating Close Port GatingDescription of System Interfaces Control Port DB25 FemaleSerial Ports 1 through 8 DB9 Male 1. RS422 Line Driver OptionSpecifications Command ResponseFCC Notice InterfaceCustomer Service Trademark and Copyright Information