SIMATIC 3

Easy Book PrefaceIntroducing the powerful and1flexible S7-1200SIMATICS7-1200Easy BookSTEP 7 makes the work2easy3Getting started4PLC concepts made easyEasy to create the device5configurationManual6Programming made easyEasy to communicate7between devices8PID is easyWeb server for easy Internet9connectivity10Motion control is easy11Easy to use the online toolsATechnical specifications07/2011A5E02486774-03

Legal informationLegal informationWarning notice systemThis manual contains notices you have to observe in order to ensure your personal safety, as well as to preventdamage to property. The notices referring to your personal safety are highlighted in the manual by a safety alertsymbol, notices referring only to property damage have no safety alert symbol. These notices shown below aregraded according to the degree of danger.DANGERindicates that death or severe personal injury will result if proper precautions are not taken.WARNINGindicates that death or severe personal injury may result if proper precautions are not taken.CAUTIONwith a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.CAUTIONwithout a safety alert symbol, indicates that property damage can result if proper precautions are not taken.NOTICEindicates that an unintended result or situation can occur if the relevant information is not taken into account.If more than one degree of danger is present, the warning notice representing the highest degree of danger willbe used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating toproperty damage.Qualified PersonnelThe product/system described in this documentation may be operated only by personnel qualified for the specifictask in accordance with the relevant documentation, in particular its warning notices and safety instructions.Qualified personnel are those who, based on their training and experience, are capable of identifying risks andavoiding potential hazards when working with these products/systems.Proper use of Siemens productsNote the following:WARNINGSiemens products may only be used for the applications described in the catalog and in the relevant technicaldocumentation. If products and components from other manufacturers are used, these must be recommendedor approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation andmaintenance are required to ensure that the products operate safely and without any problems. The permissibleambient conditions must be complied with. The information in the relevant documentation must be observed.TrademarksAll names identified by are registered trademarks of Siemens AG. The remaining trademarks in this publicationmay be trademarks whose use by third parties for their own purposes could violate the rights of the owner.Disclaimer of LiabilityWe have reviewed the contents of this publication to ensure consistency with the hardware and softwaredescribed. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, theinformation in this publication is reviewed regularly and any necessary corrections are included in subsequenteditions.Siemens AGIndustry SectorPostfach 48 4890026 NÜRNBERGGERMANYOrder number: 6ES7298-8FA30-8BQ0 08/2011Copyright Siemens AG 2011.Technical data subject to change

PrefaceWelcome to the world of S7-1200, the latest in a line of the Siemens SIMATIC controllers.The SIMATIC S7-1200 compact controller is the modular, space-saving controller for smallautomation systems that require either simple or advanced functionality for logic, HMI andnetworking. The compact design, low cost, and powerful features make the S7-1200 aperfect solution for controlling small applications.As part of the SIMATIC commitment to "totally integrated automation" (TIA), the S7-1200product family and the STEP 7 programming tool give you the flexibility you need to solveyour automation needs.The S7-1200 helps to make the most challenging tasks easy!The SIMATIC S7-1200 controller solution, designed for the "compact" controller class, iscomprised of the SIMATIC S7-1200 controller and SIMATIC HMI Basic panels that can bothbe programmed with SIMATIC STEP 7 engineering software. The ability to program bothdevices using the same engineering software significantly reduces development costs.The S7-1200 compact controller includes: Built-in PROFINET High-speed I/O capable of motion control, onboardanalog inputs to minimize space requirements andthe need for additional I/O, 2 pulse generators forpulse-width applications (Page 103), and up to 6high-speed counters On-board I/O points built into the CPU modulesprovide from 6 to 14 input points and from 4 to 10output points.Signal modules for DC, relay, or analog I/Oexpand the number of I/O points, andinnovative signal boards snap onto the frontof the CPU to provide additional I/O(Page 16).The SIMATIC HMI Basic panels weredesigned specifically for the S7-1200.This Easy Book provides an introduction tothe S7-1200 PLC. The following pages offeran overview of the many features andcapabilities of the devices.For additional information, refer to the S7-1200 programmable controller system manual. Forinformation about UL and FM certification, CE labeling, C-Tick and other standards, refer tothe Technical specifications (Page 223).Easy BookManual, 07/2011, A5E02486774-033

PrefaceThis manual describes the following products: STEP 7 V11 Basic and Professional S7-1200 CPU firmware release V2Documentation and informationS7-1200 and STEP 7 provide a variety of documentation and other resources for finding thetechnical information that you require. The S7-1200 system manual provides specific information about the operation,programming and the specifications for the complete S7-1200 product family. In additionto the system manual, the S7-1200 Easy Book provides a more general overview to thecapabilities of the S7-1200 family.Both the system manual and the Easy Book are available as electronic (PDF) and printedmanuals. The electronic manuals can be downloaded from the customer support web siteand can also be found on the companion disk that ships with every S7-1200 CPU. The online information system of STEP 7 provides immediate access to the conceptualinformation and specific instructions that describe the operation and functionality of theprogramming package and basic operation of SIMATIC CPUs. My Documentation Manager accesses the electronic (PDF) versions of the SIMATICdocumentation set, including the system manual, the Easy Book and the informationsystem of STEP 7. With My Documentation Manager, you can drag and drop topics fromvarious documents to create your own custom manual.The customer support entry portal (http://support.automation.siemens.com) provides alink to My Documentation Manager under mySupport. The customer support web site also provides podcasts, FAQs, and other helpfuldocuments for S7-1200 and STEP 7. The podcasts utilize short educational videopresentations that focus on specific features or scenarios in order to demonstrate theinteractions, convenience and efficiency provided by STEP 7. Visit the following web sitesto access the collection of podcasts:– STEP 7 Basic web page t.aspx)– STEP 7 Professional web page /Default.aspx) You can also follow or join product discussions on the Service & Support technical guests/Conferences.aspx?Language en&siteid csius&treeLang en&groupid 4000002&extranet standard&viewreg WW&nodeid0 34612486). These forums allow you to interact with various product experts.– Forum for m/guests/Conference.aspx?SortField LastPostDate&SortOrder Descending&ForumID 258&Language en&onlyInternet False)– Forum for STEP 7 guests/Conference.aspx?SortField LastPostDate&SortOrder Descending&ForumID 265&Language en&onlyInternet False)Easy Book4Manual, 07/2011, A5E02486774-03

PrefaceService and supportIn addition to our documentation, we offer our technical expertise on the Internet on thecustomer support web site ).Contact your Siemens distributor or sales office for assistance in answering any technicalquestions, for training, or for ordering S7 products. Because your sales representatives aretechnically trained and have the most specific knowledge about your operations, processand industry, as well as about the individual Siemens products that you are using, they canprovide the fastest and most efficient answers to any problems you might encounter.Easy BookManual, 07/2011, A5E02486774-035

PrefaceEasy Book6Manual, 07/2011, A5E02486774-03

Table of contentsPreface . 3123Introducing the powerful and flexible S7-1200 . 131.1Introducing the S7-1200 PLC.131.2Expansion capability of the CPU.161.3S7-1200 modules.181.4Basic HMI panels .191.5Mounting dimensions and clearance requirements .201.6New features for S7-1200 and STEP 7 V11 .22STEP 7 makes the work easy. 252.1Easy to insert instructions into your user program.262.2Easy access to your favorite instructions from a toolbar .262.3Easy to add inputs or outputs to LAD and FBD instructions.272.4Expandable instructions.272.5Easy to change the operating mode of the CPU .282.6Easy to modify the appearance and configuration of STEP 7 .292.7Project and global libraries for easy access .292.8Easy to select a version of an instruction .302.9Easy to drag and drop between editors .302.10Capturing and restoring a block state .312.11Changing the call type for a DB .322.12Temporarily disconnecting devices from a network.332.13Easy to virtually "unplug" modules without losing the configuration .34Getting started . 353.1Create a project.353.2Create tags for the I/O of the CPU.363.3Create a simple network in your user program.383.4Use the PLC tags in the tag table for addressing the instructions.403.5Add a "box" instruction.413.6Use the CALCULATE instruction for a complex mathematical equation.423.7Add an HMI device to the project.443.8Create a network connection between the CPU and HMI device.45Easy BookManual, 07/2011, A5E02486774-037

Table of contents4563.9Create an HMI connection to share tags . 453.10Create an HMI screen . 463.11Select a PLC tag for the HMI element . 47PLC concepts made easy . 494.1Tasks performed every scan cycle . 494.2Operating modes of the CPU . 514.34.3.14.3.24.3.3Execution of the user program . 52Processing the scan cycle in RUN mode. 53OBs help you structure your user program . 54Event execution priorities and queuing . 554.44.4.14.4.2Memory areas, addressing and data types. 61Data types supported by the S7-1200 . 62Addressing memory areas . 644.5Pulse outputs . 67Easy to create the device configuration . 695.1Detecting the configuration for an unspecified CPU . 705.2Adding a CPU to the configuration. 715.3Adding modules to the configuration. 725.45.4.1Configuring the operation of the CPU and modules . 73System memory and clock memory provide standard functionality. 755.5Configuring the IP address of the CPU. 785.65.6.15.6.2Protecting access to the CPU or code block is easy . 80Know-how protection. 81Copy protection . 82Programming made easy. 836.16.1.16.1.26.1.36.1.46.1.5Easy to design your user program . 83Use OBs for organizing your user program . 85FBs and FCs make programming the modular tasks easy. 86Data blocks provide easy storage for program data . 88Creating a new code block. 88Calling a code block from another code block . 896.26.2.16.2.2Easy-to-use programming languages . 89Ladder logic (LAD) . 89Function Block Diagram (FBD) . 906.36.3.16.3.26.3.36.3.46.3.56.3.66.3.7Powerful instructions make programming easy . 91Providing the basic instructions you expect . 91Compare and Move instructions . 93Conversion instructions. 94Math made easy with the Calculate instruction. 96Timers . 97Counters. 100Pulse-width modulation (PWM). 103Easy Book8Manual, 07/2011, A5E02486774-03