Power Down on PC Shutdown | Siemens 7 specification

Multiplexer Driver Developer’s Guide

2.8 Power Down

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2.8.3Power Down on PC Shutdown

When the PC is shut down, the multiplexer mode is turned off and the strings from the Registry value “ShutDown” are sent to the module, if a virtual port is in use.

Note: During shutdown, some PCs may generate an impulse on the lines of the serial interface. In applications where the DTR line connects to the ignition line (IGT), an impulse received on DTR will immediately cause the module to be restarted from Power Down mode.

Mux_Drv_DevGuide_v07	Page 17 of 36	2006-9-27
Confidential / Released

Image 17

Siemens 7 manual Power Down on PC Shutdown

Contents

User’s Guide Copyright General Notes Contents Multiplexer Driver Developer’s Guide List of Tables Tables List of Figures Figures Document History Chapter What is newDocument History Multiplexer Driver Developer’s Guide Introduction Introduction Supported Product Versions Supported Product Versions Abbreviations Related DocumentsRelated Documents Abbreviation Description Architecture Hierarchy Chart in the SystemUser Architecture Handling of the Physical Serial Port Signal DescriptionModule Detection Handling of the Physical Serial Port Handling of Control Lines on Virtual Ports Handling of Control Lines on Virtual PortsLimitation of Virtual Ports Module Initializing Sequence Command Response Function Associated Registry ValueModule Initializing Sequence Power Down on PC Suspend Power DownPower Down after Closing the Last Port Module Re-initialization Power Down Power Down on PC Shutdown Files Required for WinMux2k Driver Installation InstallationInstalling the WinMux2k Driver Installation Deinstalling the Driver Deinstalling the DriverWindows Windows XP new desktop, not the classic desktop Device Settings and Properties Device Settings and PropertiesSettings on the Serial Multiplexer Properties Value Data Example Properties Settings Stored in the Windows RegistrySettings Stored in the Windows Registry TC45, XC18 only Multiplexer Driver Developer’s Guide Values Data Example Properties Dial-up Network Settings Settings for ApplicationsFax Settings Settings for Applications Software Requirements Translate Source CodePreparing the Translation Compiler Flags Additional Source Documentation Additional Source DocumentationInteraction of the Different Driver Objects Internal Driver States Internal Driver States Buffer Handling Buffer Handling To th e S e rM u x O b je c t a re in d ic a te d Data Transfer Multiplexer Driver Developer’s Guide SerMuxSend and SerMuxSendPort0 Functions SerMuxSend Function Start +++-Parser +++-Parser Booting Operating System Known ProblemsShutdown of the Operating System Standby of the Operating System Operation on Virtual USB Port Special EnvironmentsAutomatic Shutdown in case of Emergency Special Environments