Western Telematic APS-16M, APS-8M manual RS232 Port Interface, Apx-1

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A. RS232 Port Interface

Figure A.1: RS232 Port Hardware

DCD and DTR hardware lines function as follows:

1.When connected:

a)If either port is set for Modem Mode, the DTR output at either port reﬂects the DCD input at the other end.

b)If neither port is set for Modem Mode, DTR output is held high (active).

2.When not connected:

a)If the port is set for Modem Mode, upon disconnect DTR output is pulsed for 0.5 seconds and then held high.

b)If the port is not set for Modem Mode, DTR output is controlled by the DTR Output option (Parameters Menu, Option 74). Upon disconnect, Option 74 allows DTR output to be held low, held high, or pulsed for 0.5 seconds and then held high.

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Contents Models Covered User’s GuidePage Grounding Secure RackingInput Supply Shock Hazard Do Not Enter Disconnect PowerTable of Contents List of Figures Introduction Typographic Conventions Configuration BackupModem Communication APS-8M and APS-16M UnitsFront Panel Unit DescriptionBack Panel  Power SwitchConnect your Equipment to the Serial Ports Hardware InstallationGetting Started Communicating with the APS-8/16M Access Command ModePort Status Screen Model APS-8M Shown APS-8M / APS-16M Asynchronous Port Switches User’s Guide DC Powered Units Hardware InstallationConnecting Power to the APS Unit AC Powered UnitsConnect a Telco Line to the Modem Port Connecting Devices to the APS Serial PortsAccess to the APS-8/16M Command Mode ConfigurationPassword Functions System SetUp PortsSystem Parameters Menu System Parameters Menu /F Edit Password Directory Password DirectoryAdding Passwords Editing and Deleting Passwords Dial Back Function Deleting the Entire Password DirectorySystem Parameters Menu Add Name/Password MenuDial Back Example Configuration Conventions Port ConfigurationPort Modes RTS/CTS 3. RS232 Port Configuration MenusConﬁguration Port Parameters Menu Modem Mode Port 3 Shown Conﬁguration APS-8M / APS-16M Asynchronous Port Switches User’s Guide Invalid Access Lockout Feature Copy Port Parameters Copying Parameters to All PortsSave User Selected Parameters APS-8M / APS-16M Asynchronous Port Switches User’s Guide Communicating with the Internal Modem Internal ModemDial String Modiﬁers Common AT CommandsCommand Function/Options Data Terminal Ready DTR Control Command Function/Options Port Status Screen /S Status ScreensPort Diagnostics Screen /SD Port Diagnostics Screen Model APS-8M Defaults Shown Port Parameters Screens /W Password Directory Screen /VPassword Directory Screen Sample Values Shown APS-8M / APS-16M Asynchronous Port Switches User’s Guide Port Connection and Disconnection Any-to-Any ModeOperation Enter Disconnecting PortsThree Characters Uses the format EnterLLLEnter, where Server Enter Defining Hunt GroupsHunt Group Example Buffer Mode Passive ModeXx Enter Reading Data from Buffer Mode PortsPort Buffers Modem ModeOperation APS-8M / APS-16M Asynchronous Port Switches User’s Guide Sending Parameters to a File Saving and Restoring Configuration ParametersRestoring Saved Parameters 10-1 Upgrading APS-8/16M Firmware10-2 11-1 Command Reference GuideCommand Conventions 11-2 Command Response11-3 Command Summary11-4 Command SetFormat Response Terse11-5 Format /C x x EnterFormat /CP Enter 11-6 Format /D/Y x x Enter2 Enter or /D/Y 3 Enter Format /E/Y x x Enter11-7 Format /F EnterFormat /H Enter Format /I/Y Enter11-8 Format /P x EnterFormat /S Enter Format /SD EnterFormat /V Enter Format /U EnterFormat /UF Enter Format /UL Enter11-10 Format /W x EnterFormat /X Enter Apx-1 RS232 Port InterfaceStop Bits 1 or SpecificationsPower RS232 Port InterfaceApx-3 Customer ServiceApx-4 Trademark and Copyright InformationTrademarks Used in this Manual Apx-5 Regulatory StatementsApx-6 EMC, Safety, and R&TTE Directive ComplianceIndex-1 IndexIndex-2 Index Index-3Index-4 Page Sterling Irvine California 949 586-9950 Toll Free