Meaning of the Data in the Digital Module | Siemens CP 243-2

Interface to the User Program in the S7-200 CPU

2.3Meaning of the Data in the Digital Module

Overview

The digital module of the CP 243-2 consists of four registers:

SIdentification register, 8 bits (I/O module identifier)

SError register, 8 bits

SInput register 8DI (status byte of the CP 243-2)

SOutput register 8DO (control byte of the CP 243-2)

Essentially, the functions shown in the following diagram are handled via these registers:

S7-200 CPU	CP 243-2
User program	Digital module (8DI/8DO)
	S	Status/error information
	S Control of the CP
	S	Bank selection
	Analog module (8AI/8AO)
		AS-i master	ÍÎÎ
AS-i cable
Figure 2-2

SIMATIC NET CP 243-2 AS-i Master	2-7
C79000-G8976-C142/02

Image 33

Siemens CP 243-2 installation instructions Meaning of the Data in the Digital Module, Overview

Contents

Manual AS-Interface MasterAppendix 07/2000 C79000-G8976-C142 Release Qualified Personnel Safety GuidelinesCorrect Usage Trademarks Preface We recommend the following procedure whenPurpose of the Manual Requirements 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 DP Slave and AS-i Master Uses of the ModuleAS-i Master 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 Changing the Display Status ± Display Button Displays and Operator ControlsMeaning of the LEDs SET Button Interpreting the Status Display Status DisplayLED color Status LED color Status SF red System error Meaning Slave Display Characteristics of the Slave DisplayInterpreting the Slave Display Status Display Statuses in Detail Example of a Slave Display Example of a Slave Display Configuration Mode Configuring the AS-Interface with the SET ButtonProtected Mode Interpreting the Display Status Configuring Preparing to Configure Technical Description and Installation Instructions Interface to the User Program S7-200 CPU CP 243-2 as Expansion Module in the S7-200 OverviewS7-200 CPU Digital Module Analog Module Address Areas Addressing the CP 243-2 in the S7-200 CPUExamples CPU 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 Meaning Identification Register in the Digital ModuleRange of Values Example Error Register in the Digital Module Example of Access to the Error RegisterMeaning for the User Program Structure of the Status Byte Status Byte Input Register 8DIDescription of the Bits Bit Value Structure of the Control Byte Control Byte Output Register 8DOBit Value Meaning 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 Access in the User Program Access to the Analog Input and Output WordsPrinciple Advantage Interface to the User Program in the S7-200 CPU Analog Input Area Assignment of the Input AreasS7-200 CPU Banks 2±15 Response data on the AS-Interface Bank 1 Diagnostics on the AS-InterfaceBanks 16±30 Reserved area Bank 31 Binary input data of the AS-i slaves 1B ± 31B 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 Name Description of the AS-i CommandsParameter Return 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 Purpose SetPermanentParameterStructure of the Job Data in the Send Buffer Structure of the Job Data in the Receive 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 End bit error detected Parity error detected Error detectedRead error in non-volatile memory GetAS-iSlaveStatus 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 Product Name Installation InstructionsEU Directive EMC 89/336/EEC Area of Application Simatic NET CP 243-2 AS-i Master C79000-G8976-C142/02 Simatic Training Center Simatic NET ± Support and TrainingSimatic Customer Support Hotline Nuremberg Johnson City Singapore Simatic Basic Hotline Simatic Customer Support Online Services Further SupportSimatic Premium Hotline Glossary AS-i slave AS-i moduleAS-i standard slave Extended AS-i master Standard AS-i master Nibble Glossary-4 Index PICS, A-1