WriteParameter, Purpose of the Command | Siemens CP 243-2 specs

Command Interface

5.2.3Write_Parameter

Purpose of the Command

The AS-i parameter value transferred with the command is passed on to the addressed AS-i slave.

The parameter is stored on the CP 243-2 only temporarily and is not entered as a configured parameter in the EEPROM!

The AS-i slave transfers its current parameter value in the reply (parameter echo). This can deviate from the value that has just been written according to the AS-i master specification (/2/). The AS-i slave response is supplied as a parameter echo in the receive buffer.

This call is not permitted for AS-i slaves that comply with the AS-i slave standard profile 7.4. For these slaves, the AS-i master handles the AS-i slave parameter assignment itself.

Structure of the Job Data in the Send Buffer

Bank Byte

2

0

21

22

	Meaning

Bit 7	Bit 4	Bit 3		Bit 0

	Command number: 02 H
	AS-i slave address

irrelevant			Parameter

Structure of the Job Data in the Receive Buffer

Bank Byte

2	0

21

22

Meaning

Bit 7	Bit 4	Bit 3	Bit 0

Echo of the command number: 02 H

Command status

Parameter echo

SIMATIC NET CP 243-2 AS-i Master	5-15
C79000-G8976-C142/02

Image 83

Siemens CP 243-2 installation instructions WriteParameter, Purpose of the Command

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 Dealing with Problems / Error Displays Signaling Errors and Diagnostics in the User ProgramCommand Interface 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 Explanation/Values Technical Specifications of the ModuleFeature Possible Restrictions Installing the ModuleSlots in the S7-200 Connection, Display and Control Elements Front Panel ± Access to all Functions Connections to the AS-i Cable Terminal BlockConnections Technical Description and Installation Instructions Extended Operation Modes of the CPStandard 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 Meaning for the User Program Error Register in the Digital ModuleExample of Access to the Error Register 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 Bit Description/Range of Values Error Register in the Analog ModuleStructure of the Error Register 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 S7-200 CPU Analog Input AreaAssignment of the Input Areas 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 Bank 1 reserved Analog Output AreaAssignment of the Output Areas Banks 32±47 Analog output data of the AS-i slaves Banks 2±15 Command data on the AS-InterfaceBank 31 Binary output data of the AS-i slaves 1B ± 31B 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 Bank Byte no Meaning Access to the Analog ValuesAssignment of the AS-i Analog Data 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 Extended ID2 code SetExtendedPermanentConfigurationID 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 Response Buffer Structure of the Command BufferReadDataandDeltaList Delta Slave Reserv Slave 7B Slave 6B Command Interface Dealing with Problems / Error Displays You can now replace the defective slave as follows Simple Replacement of AS-Interface SlavesDetecting Defective AS-Interface Slaves Possible Cause Remedy Error Displays of the CP 243-2 / Remedying ErrorsError Error Possible Cause Remedy Dealing with Problems / Error Displays Dealing with Problems / Error Displays Comment / Function implemented by / Section Pics for the CPList of Master Functions Available 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 Premium Hotline Simatic Customer Support Online ServicesFurther Support 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