GE Series 90-70 manual Inputs and Outputs Hold Last State

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Inputs and Outputs Hold Last State

The inputs and outputs of the I/O Link Interface Module will hold their last states if one of the following events occurs:

Hthe link is broken.

Hthe master resets.

Hthe slave resets.

Hthe Series 90-70 PLC is put into STOP mode.

Hthe Series 90-70 PLC is powered-down.

When the disruption is corrected, the module initializes all inputs and outputs to zero, then quickly resets them to their actual states.

GFK±0644A

Chapter 1 Introduction

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Contents GE Fanuc Automation GFL±002 Content of this Manual Related PublicationsWe Welcome Your Comments and Suggestions Contents System Overview Chapter IntroductionMaster or Slave Operation Application Software LEDs Module DescriptionModule Specifications Reset PushbuttonSerial Ports CatalogNumber Cable Types for the I/O LinkCable Lengths on the I/O Link Optical Adapter Input and Output Data Operation of the I/O LinkData Returned by Slaves Data Sent by the MasterInputs and Outputs Hold Last State Faults on the I/O Link Link Control DiagnosticsInstall the module and complete the I/O Link Getting StartedComplete the program logic for the I/O Link Module Installing the I/O Link Interface Module in the Rack Chapter InstallationLED Name LED Status Indication Removing the I/O Link Interface Module from the RackConnecting the I/O Link Interface Module to Other Devices Ports on the I/O Link ModuleLink Module Used as a Master Serial Port Pin Assignments Link Module Used as a SlaveOrder of the Devices on the Link Cable Diagram, No Optical Adapter Optical Adapter Installation Cable Diagram, Electrical Cable to Optical AdapterCable Connections Configuration Steps Chapter Logicmaster 90-70 ConfigurationGFK-0644A Overview Chapter Programming GuideAdding the Program Block Logic to an Application Program Selecting a Program BlockUsing Multiple Calls to the Program Block Calling the Program BlockExample Call Instruction 3rdModule 4thModule Program %P References for the I/O Link Program BlocksGlobal %G References for the I/O Link Program Blocks Using Nicknames for the %P ReferencesConfiguration Logic, Example Configuring I/O LinksSpecify the Number of I/O Link Modules Configuration GuidelinesStart/Restart bit Set Master or Slave Mode bitReset or Stop bit Controlling the I/O Link ModuleDisable or Enable the Output Update bit Disable or Enable the Input Update bitMonitoring Link Operation Monitor the Module bitMonitor Communications Status bit Monitor for Link Failure bit Monitor for an Invalid Configuration or Link Fault bitError Description RecommendedAction Code Error Codes TroubleshootingConfiguration Error Codes Index GFK-0644A Index