Access to the Analog Values | Siemens CP 243-2 instruction

Access to the Data of the AS-i Slaves

3.2Access to the Analog Data of the AS-i Slaves (Slaves complying with Profile 7.3 or 7.4)

3.2.1Addressing the Analog AS-i Slaves in the User Program

Requirements

Before you can access the I/O data of the AS-i slaves, the following requirements must be met:

SDeactivate the filtering of the analog inputs for the CP 243±2 in the system data block of the S7±200 CPU.

SSet the ªPLC_RUNº bit (bit 7) in the digital control byte to '1' at the beginning of the cyclic program.

SAccess to the I/O data of the slaves is then only allowed when the ªCP_Readyº bit (bit 1) in the digital status byte is set to '1'.

The following explanations do not apply to analog slaves complying with profile 7.1 or 7.2. Analog value transfer for these slaves is not supported by the CP 243-2.

Access to the Analog Values

The CP 243-2 assigns four words in the input area and four words in the output area for each AS-i slave. The PLC can write these values (analog outputs) or read these values (analog inputs).

Assignment of the AS-i Analog Data

Bank

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

32

Byte no.

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Meaning

Slave 1, channel 1, high byte

Slave 1, channel 1, low byte

Slave 1, channel 2, high byte

Slave 1, channel 2, low byte

Slave 1, channel 3, high byte

Slave 1, channel 3, low byte

Slave 1, channel 4, high byte

Slave 1, channel 4, low byte

Slave 2, channel 1, high byte

Slave 2, channel 1, low byte

Slave 2, channel 2, high byte

Slave 2, channel 2, low byte

Slave 2, channel 3, high byte

Slave 2, channel 3, low byte

Slave 2, channel 4, high byte

Slave 2, channel 4, low byte

3-8	SIMATIC NET CP 243-2 AS-i Master
	C79000-G8976-C142/02

Image 56

Siemens CP 243-2 Access to the Analog Values, Assignment of the AS-i Analog Data, Bank Byte no Meaning

Contents

AS-Interface Master ManualAppendix 07/2000 C79000-G8976-C142 Release Safety Guidelines Qualified PersonnelCorrect Usage Trademarks We recommend the following procedure when PrefacePurpose of the Manual Requirements Preface Contents Dealing with Problems / Error Displays Signaling Errors and Diagnostics in the User ProgramCommand Interface Glossary Index References Simatic NET ± Support and Training Contents Technical Description and Installation Instructions General Notes on Operation ± Safety Warnings Uses of the Module DP Slave and AS-i MasterAS-i Master Components Supplied Explanation/Values Technical Specifications of the ModuleFeature Possible Restrictions Installing the ModuleSlots in the S7-200 Front Panel ± Access to all Functions Connection, Display and Control Elements Connections to the AS-i Cable Terminal BlockConnections Technical Description and Installation Instructions Extended Operation Modes of the CPStandard Operation Displays and Operator Controls Changing the Display Status ± Display ButtonMeaning of the LEDs SET Button Status Display Interpreting the Status DisplayLED color Status LED color Status SF red System error Meaning Characteristics of the Slave Display Slave DisplayInterpreting the Slave Display Status Display Statuses in Detail Example of a Slave Display Example of a Slave Display Configuring the AS-Interface with the SET Button Configuration ModeProtected Mode Interpreting the Display Status Preparing to Configure Configuring Technical Description and Installation Instructions Interface to the User Program S7-200 CPU Overview CP 243-2 as Expansion Module in the S7-200S7-200 CPU Digital Module Analog Module Addressing the CP 243-2 in the S7-200 CPU Address AreasExamples CPU Example of a CPU 224, a CP 243-2 and a CP CPU 14 DI 10 do CPU 14DI 10 do Module Meaning of the Data in the Digital Module Overview Identification Register in the Digital Module MeaningRange of Values Example Meaning for the User Program Error Register in the Digital ModuleExample of Access to the Error Register Status Byte Input Register 8DI Structure of the Status ByteDescription of the Bits Bit Value Control Byte Output Register 8DO Structure of the Control ByteBit Value Meaning Meaning of the Data in the Analog Module Digital module 8DI/8DO 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 Access to the Analog Input and Output Words Access in the User ProgramPrinciple Advantage Interface to the User Program in the S7-200 CPU S7-200 CPU Analog Input AreaAssignment of the Input Areas Bank 1 Diagnostics on the AS-Interface Banks 2±15 Response data on the AS-InterfaceBanks 16±30 Reserved area Bank 31 Binary input data of the AS-i slaves 1B ± 31B Banks 32±47 Analog input data of the AS-i slaves Banks 48±63 Reserved area 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 Bank Byte no Bit 7±4 Bit 3±0 Reserved Slave 1B Data Exchange in the Stop Mode of the S7-22x CPU Special Feature of Analog Slaves AS-i slaves Output byte Access to the AS-i User Data Data Access with Micro 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 Representation of the Analog Values Special Situations Access to the AS-i Analog Data SBR 4 STL Access to the Data of the AS-i Slaves Signaling Errors and Diagnostics User Program Signaling Error Signaling Example Reading the Delta List STL Example Signaling Errors and Diagnostics in the User Program Command Interface Command interface of the CP Command Buffer and Response Buffer Command Sequence AS-i master User program Reaction to command Example SBR 3 STL Q1.0 Select bank AIW0, VW512 Description of the AS-i Commands NameParameter Return LPF General Structure of the Command Buffer Bank Byte Meaning / Content General Structure of the Response Buffer Bank Byte Command Status General Structure of the AS-i Slave Address Bit Slave address SetPermanentParameter PurposeStructure of the Job Data in the Send Buffer Structure of the Job Data in the Receive Buffer GetPermanentParameter Purpose of the Command WriteParameter ReadParameter StoreActualParameters Extended ID2 code SetExtendedPermanentConfigurationID code GetExtendedPermanentConfiguration StoreActualConfiguration GetExtendedActualConfiguration SetExtendedLPS Reserved Mode SetOfflineMode SelectAutoprogramming SetOperationMode ChangeAS-iSlaveAddress Parity error detected Error detected End bit error detectedRead error in non-volatile memory GetAS-iSlaveStatus Reserved GetLPS, GetLAS, GetLDS, GetFlags Flag Bit Number Meaning 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 ReadVersionID Purpose ReadAS-iSlaveID Reserved ID code ReadAS-iSlaveID1 Reserved Extended ID1 code WriteAS-iSlaveExtendedID1 Irrelevant Extended ID1 code ReadAS-iSlaveID2 Reserved Slave ID2 Reserved Configuration ReadAS-iSlaveI/O GetLPF WriteAS-iSlaveParameterString ReadAS-iSlaveParameterString Byte Meaning 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 AS-Interface Protocol Implementation Function or Call on the Host Interface Idcod AS-Interface Protocol Implementation References Simatic S7-200 Order numbers References Installation Instructions Product NameEU Directive EMC 89/336/EEC Area of Application Simatic NET CP 243-2 AS-i Master C79000-G8976-C142/02 Simatic NET ± Support and Training Simatic Training CenterSimatic Customer Support Hotline Nuremberg Johnson City Singapore Simatic Basic Hotline Simatic Premium Hotline Simatic Customer Support Online ServicesFurther Support Glossary AS-i module AS-i slaveAS-i standard slave Extended AS-i master Nibble Standard AS-i master Glossary-4 Index PICS, A-1