AS-Interface - Introduction and Basics

1 Preface, ContentsAS-Interface (AS-i)1AS - Interface Safety at Work(ASIsafe)2AS-i System Components3 The master Mode - Commands,Sequence, Programming4 AppendixReferencesAGlossaryBIndexSIMATIC NETAS-Interface - Introduction andBasicsRelease 04/2006C79000 - G8976 - C089 - 04 Manual2 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 Classification of the Safety - Related NoticesThis manual contains notices which you should observe to ensure your ownpersonal safety, as well as to protect the product and connected equipment. Thesenotices are highlighted in the manual by a warning triangle and are marked asfollows according to the level of danger:!Dangerindicates that death, severe personal injury will result if proper precautions are nottaken.!Warningindicates that death, severe personal injury can result if proper precautions are nottaken.!Cautionwith warning triangle indicates that minor personal injury can result if proper pre-cautions are not warning triangle indicates that damage to property can result if proper pre-cautions are not that an undesirable result or status can occur if the relevant notice important information on the product, using the product, or part of thedocumentation that is of particular importance and that will be of benefit to NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 TrademarksSIMATICR, SIMATIC HMIR and SIMATIC NETR are registered trademarks ofSIEMENS parties using for their own purposes any other names in this document whichrefer to trademarks might infringe upon the rights of the trademark Instructions Regarding your ProductBefore you use the product described here.

2 Read the safety instructions PersonnelOnly qualified personnel should be allowed to install and work on this persons are defined as persons who are authorized to commission, toground, and to tag circuits, equipment, and systems in accordance withestablished safety practices and Usage of Hardware ProductsNote the following:!WarningThis device and its components may only be used for the applications described inthe catalog or the technical description, and only in connection with devices orcomponents from other manufacturers which have been approved or recommen-ded by product can only function correctly and safely if it is transported, stored, setup, and installed correctly, and operated and maintained as you use the supplied sample programs or programs you have written your-self, make certain that no injury to persons nor damage to equipment can result inyour plant or Notice: Commissioning must not be carried out until it has been establishedthat the machine in which this component is to be installed complies with theconditions of directive 89/392 Usage of Software ProductsNote the following:!

3 WarningThis software may only be used for the applications described in the catalog or thetechnical description, and only in connection with devices or software productsfrom other manufacturers which have been approved or recommended by you use the supplied sample programs or programs you have written your-self, make certain that no injury to persons nor damage to equipment can result inyour plant or NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 Prior to StartupBefore putting the product into operation, note the following:VorsichtPrior to startup you must observe the instructions in the relevant ordering data of the documentation please refer to the catalogs or contact yourlocal SIEMENS have checked the contents of this manual for agreement with thehardware and software described. Since deviations cannot be precludedentirely, we cannot guarantee full agreement.

4 However, the data in thismanual are reviewed regularly and any necessary corrections included insubsequent editions. Suggestions for improvement are E Siemens AG 2001 - 2006 All rights reservedThe reproduction, transmission or use of this document or its contents is notpermitted without express written authority. Offenders will be liable fordamages. All rights, including rights created by patent grant or registration ofa utility model or design, are AGAutomation and DrivesIndustrial CommunicationPostfach 4848, 90327 N rnberg, GermanyTechnical data subject to AktiengesellschaftG79000- G8976- C089/045 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 PrefacePurpose of the ManualThis manual contains basic information and an Introduction to the AS-Interfacesystem concept and the corresponding system require this manual to understand the manuals that are shipped with the AS-isystem components, particularly with the AS-i release of the manual contains supplementary information relating to theextension of the AS-i master specification and the extended SIMATIC NET involves the following aspects.

5 SWith the new concept of Combined Transactions , slaves with up to 8 binaryinputs and eight binary outputs can be connected (496 inputs and 496 outputsper network).SSimplification of analog data transferSTransfer of serial dataSImproved diagnosticsSNew cable specification (switching cabinet cabling).AS-InterfaceThe AS - Interface is the open international standard EN 50 295. Leadingmanufacturers of sensors and actuators worldwide support the AS - Interface. Theelectrical and mechanical specifications are available for interested Support - Who to ContactIf you have technical questions about using the product described here, pleasecontact your local Siemens will find further information in the appendix in Support and Training .Preface6 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 Other DocumentationYou should also read the information supplied with the AS-i components fromSIMATIC NET and the documents on the - interfaceRefer also to the references in the appendix of this NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 ContentsPreface5.

6 Contents7.. AS-Interface (AS-i)8.. of Application9.. of the AS-i System Components13.. Masters15.. Slaves16.. AS-i System Components18.. Characteristics and Important Data21.. AS-Interface Safety at Work (ASIsafe)25.. - The Safety Concept26.. AS-i System Components28.. Masters29.. Modules: Blocks of the AS-i Slaves31.. AS-i Cable33.. an AS-i Module35.. Repeaters / Extenders / Extension Plugs36.. Unit40.. Device - AS-Interface Analyzer42.. The master Mode - Commands, Sequence, Programming44.. Principle45.. and Functions of the AS-i Master46.. an AS-i Slave Functions48.. Transfer50.. Operating Phases52.. Functions55.. Extended AS-i Slaves with Standard AS-i Masters56.. References57.. Glossary59.. Index-8 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 041 AS-Interface (AS-i)This chapter deals with the following topics:SThe range of applications that can be covered by the AS-InterfaceSWhich system components are available on the AS-InterfaceSThe system properties of the AS-Interface1 AS-Interface (AS-i)9 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- of ApplicationStandardized fieldbusAS-Interface is the only worldwide standardized bit-oriented Cable Replaces Cable Harnesses The Actuator/Sensor Interface or AS-Interface , normally abbreviated to AS-i, is aconnection system for the lowest process level in automation systems.

7 The cableharnesses previously found at this level are replaced by a single electrical cable,the AS-i cable. Simple command devices, variable speed three-phase motors, lightbarriers, inductive proximity switches and (over AS-i modules) more complexdevices such as process valves are connected over the AS-i cable and the AS-imaster to the controllers at the field provides the option of transferring standard data and safety-orienteddata on the same cable. This allows, for example, the emergency stop cabling of amachine or system to be implemented over in SIMATICAS-Interface is the SIMATIC product name for the AS-i the name AS-Interface , Siemens produces AS-i master interface modulesfor programmable controllers. The range of available master interface modules isbeing permanently extended. Up-to-date information can be obtained from yourlocal Siemens AS-Interface (AS-i)10 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 The following diagram illustrates the position of AS-i within the automation 1-1 The AS-Interface is distinguished by several main characteristics:SAS-interface is optimized for connecting binary and analog sensors andactuators.

8 The AS-i cable is used both for data exchange between thesensors/actuators (AS-i slaves) and the AS-i master as well as for power supplyto the sensors / and cost-effective wiring: simple installation with the penetration technique, high flexibility with tree-like reaction times: the AS-i master requires a maximum of 5 ms for cyclic dataexchange with up to 31 nodes (with 62 nodes 10 ms).SNodes (AS-i slaves) on the AS-i cable can be either sensors/actuators with anintegrated AS-i connector or AS-i modules to which up to four conventionalbinary sensors/actuators can be standard AS-i modules, up to 124 actuators/sensors can be operated onthe AS-i you use AS-i modules with the extended addressing mode, up to 248actuators and 248 sensors can be operated with one extended master . Whenusing the profile with 8I/8O, up to 496 actuators and 496 sensors canbe AS-Interface (AS-i)11 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 SExtended AS-i masters according to Specification support extremelysimple access to analog sensors/actuators or modules operating in compliancewith the AS-Interface slave profile Extended AS-i masters according to Specification also support the profiles- (100 bps bi-directional; 2DI/2DO),- (50 bps bi-directional; 2DI/2DO),- (50 bps bi-directional; 20 chars/s),- (4DI/4DO),- (8I/8O),- (1 analog channel; 1 DO),- (2 analog channels),- (super fast analog).

9 AS-i - Open Standard for Network Systems at the Process LevelThe electrical and mechanical specifications for AS-i were compiled by elevencompanies active in the field of binary sensors and actuators. The specificationsare available for companies with interests in this field. This makes AS-i an open,heterogeneous standard. With AS-Interface , Siemens provides a system complyingwith the AS-i Association for Promoting Interfaces with Bus Capability for Binary Actuatorsand Sensors (AS-i Association) is responsible for promoting the application anddissemination of the AS-i system; in particular the specification, standardization,certification and general user AS-Interface (AS-i)12 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 Overview of the Various SpecificationsSince the Introduction of AS - Interface, three specifications have been published bythe AS International Association each with an extended and improved range offunctions on the AS - following table provides an overview:Table 1-1AS - i Specifications , M1, M2M3M4 Slaveall other slaves(all other profiles)S - , S - , S - - , S - ,S - , S - ,S - , S - ,S - , S - features62 slaves,expanded ID codes, I/Oerrors, , newcommunication types 50295:1998 IEC 62026 - 2:2000 IEC 62026 - 2.

10 200X1 AS-Interface (AS-i)13 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- of the AS-i System ComponentsSystem Components in the AS-i NetworkSAS - i masterSAS-i slaves, distinguished according to their design as follows:- AS-i modules- Sensors/actuators with an integrated AS-i connectionSAS-i cableSAS-i power supply unitSAddressing unit (in some cases integrated in the master )SDiagnostic unitSSafety monitorSRepeaterSExtenderSExtension plugThe following schematic shows a possible arrangement of AS-i components in atree AS-Interface (AS-i)14 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- 04 Figure 1-2 NoteDue to the continuing development of new AS-i system components, a completepresentation of all the currently available components is not possible. Refer to thesystem catalogs and ask your Siemens office for more AS-Interface (AS-i)15 SIMATIC NETAS-Interface - Introduction and BasicsRelease 04/2006C79000- G8976- C089- MastersSiemens currently offers the following AS-i master types:SStandard AS-i mastersUp to 31 standard AS - i slaves or AS - i slaves with the extended addressingmode (only A slaves) can be connected to the standard AS - i AS-i masters are available for connecting to the following systems:- SIMATIC S5- SIMATIC S7- SIMATIC C7- Distributed I/O:- SIMOTION CSExtended AS-i Masters-Addressing modeThe extended AS-i masters support 31 addresses that can be used forstandard AS-i slaves or AS-i slaves with the extended addressing slaves with the extended addressing mode can be connected in pairs(programmed as A or B slaves) to an extended AS-i master and can use thesame address.