Nibble, Standard AS-i master | Siemens CP 243-2 specification

Glossary

Nibble

A nibble is a unit of information consisting of four bits.

Standard AS-i master

Up to 31 standard slaves or slaves with the extended addressing mode (A slaves only) can be attached to a standard AS-i master.

SIMATIC NET CP 243-2 AS-i Master	Glossary-3
C79000-G8976-C142/02

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Siemens CP 243-2 installation instructions Nibble, Standard AS-i master

Contents

07/2000 C79000-G8976-C142 Release AS-Interface MasterManual Appendix Trademarks Safety GuidelinesQualified Personnel Correct Usage Requirements We recommend the following procedure whenPreface Purpose of the Manual Preface Contents Signaling Errors and Diagnostics in the User Program Command InterfaceDealing with Problems / Error Displays References Simatic NET ± Support and Training Glossary Index Contents Technical Description and Installation Instructions General Notes on Operation ± Safety Warnings Master Uses of the ModuleDP Slave and AS-i Master AS-i Components Supplied Technical Specifications of the Module FeatureExplanation/Values Installing the Module Slots in the S7-200Possible Restrictions Connection, Display and Control Elements Front Panel ± Access to all Functions Terminal Block ConnectionsConnections to the AS-i Cable Technical Description and Installation Instructions Modes of the CP Standard OperationExtended Operation SET Button Displays and Operator ControlsChanging the Display Status ± Display Button Meaning of the LEDs Status Status DisplayInterpreting the Status Display LED color LED color Status SF red System error Meaning Display Statuses in Detail Characteristics of the Slave DisplaySlave Display Interpreting the Slave Display Status Example of a Slave Display Example of a Slave Display Interpreting the Display Status Configuring the AS-Interface with the SET ButtonConfiguration Mode Protected Mode Configuring Preparing to Configure Technical Description and Installation Instructions Interface to the User Program S7-200 CPU Digital Module OverviewCP 243-2 as Expansion Module in the S7-200 S7-200 CPU Analog Module CPU Addressing the CP 243-2 in the S7-200 CPUAddress Areas Examples CPU 14 DI 10 do Example of a CPU 224, a CP 243-2 and a CP Module CPU 14DI 10 do Overview Meaning of the Data in the Digital Module Example Identification Register in the Digital ModuleMeaning Range of Values Error Register in the Digital Module Example of Access to the Error RegisterMeaning for the User Program Bit Value Status Byte Input Register 8DIStructure of the Status Byte Description of the Bits Value Meaning Control Byte Output Register 8DOStructure of the Control Byte Bit Digital module 8DI/8DO Meaning of the Data in the Analog Module Identification Register in the Analog Module Error Register in the Analog Module Structure of the Error RegisterBit Description/Range of Values Example of Access to the Error Register Advantage Access to the Analog Input and Output WordsAccess in the User Program Principle Interface to the User Program in the S7-200 CPU Analog Input Area Assignment of the Input AreasS7-200 CPU Bank 31 Binary input data of the AS-i slaves 1B ± 31B Bank 1 Diagnostics on the AS-InterfaceBanks 2±15 Response data on the AS-Interface Banks 16±30 Reserved area Banks 48±63 Reserved area Banks 32±47 Analog input data of the AS-i slaves Analog Output Area Assignment of the Output AreasBank 1 reserved Banks 2±15 Command data on the AS-Interface Bank 31 Binary output data of the AS-i slaves 1B ± 31BBanks 32±47 Analog output data of the AS-i slaves Access to the Data of the AS-i Slaves Access to the Binary Values Bit 7±4 Bit 3±0 Bank Byte no Reserved Slave 1B Special Feature of Analog Slaves Data Exchange in the Stop Mode of the S7-22x CPU Output byte AS-i slaves Data Access with Micro Access to the AS-i User Data Access to the Analog Values Assignment of the AS-i Analog DataBank Byte no Meaning Simatic NET CP 243-2 AS-i Master C79000-G8976-C142/02 Access to the Data of the AS-i Slaves Access to the Data of the AS-i Slaves Access to the Data of the AS-i Slaves Access to the Data of the AS-i Slaves Special Situations Representation of the Analog Values SBR 4 STL Access to the AS-i Analog Data Access to the Data of the AS-i Slaves Signaling Errors and Diagnostics User Program Error Signaling Signaling STL Example Example Reading the Delta List Signaling Errors and Diagnostics in the User Program Command Interface Command Buffer and Response Buffer Command interface of the CP AS-i master User program Reaction to command Command Sequence SBR 3 STL Example Q1.0 Select bank AIW0, VW512 Return Description of the AS-i CommandsName Parameter LPF Bank Byte Meaning / Content General Structure of the Command Buffer Bank Byte General Structure of the Response Buffer Command Status Bit Slave address General Structure of the AS-i Slave Address Structure of the Job Data in the Receive Buffer SetPermanentParameterPurpose Structure of the Job Data in the Send Buffer GetPermanentParameter WriteParameter Purpose of the Command ReadParameter StoreActualParameters SetExtendedPermanentConfiguration ID codeExtended ID2 code GetExtendedPermanentConfiguration StoreActualConfiguration GetExtendedActualConfiguration SetExtendedLPS SetOfflineMode Reserved Mode SelectAutoprogramming SetOperationMode ChangeAS-iSlaveAddress GetAS-iSlaveStatus Parity error detected Error detectedEnd bit error detected Read error in non-volatile memory Reserved GetLPS, GetLAS, GetLDS, GetFlags Bit Number Meaning Flag Meaning of the Flags GetExtendedTotalConfiguration Idcode slave Ext ID1 slave Command Interface Command Interface Reserved Parameter slave 1B StoreExtendedTotalConfiguration Idcode slave Ext ID1 Slave Configuration slave Ext ID2 slave Command Interface Command Interface Configmode Autoaddrenable Echo of the command number 3A H Command status WriteExtendedParameterList Echo of the command number 3C H Command status ReadExtendedParameterEchoList Command Interface Purpose ReadVersionID Reserved ID code ReadAS-iSlaveID Reserved Extended ID1 code ReadAS-iSlaveID1 Irrelevant Extended ID1 code WriteAS-iSlaveExtendedID1 Reserved Slave ID2 ReadAS-iSlaveID2 ReadAS-iSlaveI/O Reserved Configuration GetLPF WriteAS-iSlaveParameterString Byte Meaning ReadAS-iSlaveParameterString ReadAS-iSlaveIDString ReadAS-iSlaveDiagnosticString Structure of the Command Buffer ReadDataandDeltaListStructure of the Response Buffer Delta Slave Reserv Slave 7B Slave 6B Command Interface Dealing with Problems / Error Displays Simple Replacement of AS-Interface Slaves Detecting Defective AS-Interface SlavesYou can now replace the defective slave as follows Error Displays of the CP 243-2 / Remedying Errors ErrorPossible Cause Remedy Error Possible Cause Remedy Dealing with Problems / Error Displays Dealing with Problems / Error Displays Pics for the CP List of Master Functions AvailableComment / Function implemented by / Section Function or Call on the Host Interface AS-Interface Protocol Implementation Idcod AS-Interface Protocol Implementation Simatic S7-200 References References Order numbers Area of Application Installation InstructionsProduct Name EU Directive EMC 89/336/EEC Simatic NET CP 243-2 AS-i Master C79000-G8976-C142/02 Nuremberg Johnson City Singapore Simatic Basic Hotline Simatic NET ± Support and TrainingSimatic Training Center Simatic Customer Support Hotline Simatic Customer Support Online Services Further SupportSimatic Premium Hotline Glossary Extended AS-i master AS-i moduleAS-i slave AS-i standard slave Standard AS-i master Nibble Glossary-4 Index PICS, A-1