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Siemens SIMATIC S7 400 Application Description

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Application for Control Technology
SIMATIC S7 CPU 300/400
Application Description
Time switch based on the S7-300/400 CPUs with simple HMI
system including radio-controlled clock connection

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Summary of Contents for Siemens SIMATIC S7 400

  • Page 1 Application for Control Technology SIMATIC S7 CPU 300/400 Application Description Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection...
  • Page 2 By using this application example you accept that Siemens is not liable for any damages except for those specified in the above liability clause. We reserve the right to make changes in these application examples at any time without prior notice.
  • Page 3 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Foreword Structure of the document The documentation of this application is divided into the following main parts. Part Description Note Part A1 gives you a general overview of the contents.

  • Page 4: Table Of Contents

    Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table of Contents Part A1 : Application Description................7 Illustrate the performance of the entire applicationThe Automation Problem - An Overview................8 Automation Solution ..................
  • Page 5 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection 5.2.2 Load the application software into the panel ..........51 Using the Application................... 54 Application case 1: Many time switches ............54 Application case 2: Pulse chain ..............
  • Page 6 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Preamble Many systems in automation technology (e.g. in the field of Heating, Ventilation & Air Conditioning) require a control dependent on time of the day and day of the week.

  • Page 7: Part A1 : Application Description

    Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Part A1 : Application Description Objectives of Part A1 Part A1 of this document provides the reader with information on the following topics: •...

  • Page 8: Illustrate The Performance Of The Entire Applicationthe Automation Problem - An Overview

    Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Illustrate the performance of the entire applicationThe Automation Problem - An Overview Precise time tuning is necessary in many fields. Even in household technology for example, systems must work dependent on time of the day or day of the week.
  • Page 9 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table 1-1 Application examples for professional time switches Application Illustration Greenhouse control: Watering and lighting systems of a greenhouse must be controlled. Lighting control: Lighting systems are automatically controlled in residential homes or hotels.
  • Page 10 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Monitoring and Control unit Protocol services S7-CPU User program Process area Fig. 1-2 Problem layout for automation technology A block in the S7-CPU, which sets an output dependent of absolute time or which after a certain event lets a parameterized length of time pass, is required for the temporal design of these or similar processes.
  • Page 11 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection This application was realized with the SIPLUS radio clock. Alternatively the SICLOCK radio clock can be used. This alternative is dealt with in detail in the appendix.

  • Page 12: Automation Solution

    Automation Solution The automation problem described in chapter 1 can be solved with standard hardware and software components (SIEMENS) plus the user's own customized software. The SIMATIC S7, together with a monitoring and control unit (SIMATIC OP/TP), is useful for executing the automation task.
  • Page 13 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Diagram of user software running on the standard components Fig. 2-2 User software Description of the complete solution Solving the task described in chapter 1 requires several blocks (see Chapter 2.1) for time-dependent setting or resetting of an output.
  • Page 14 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Furthermore, the application contains additional functions such as summer/winter time changeover as well as taking holidays into consideration. The additional function „Summer/winter time changeover“ is conducted by default by the FB103 „summer_winter“.

  • Page 15: Functionality In The S7-Cpu

    Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Functionality in the S7-CPU The following blocks are available in the S7-CPU: 2.1.1 Absolute time switching functions One-day time switch: This block can detect a time range within 24 hours, e.g. 8 to 12 o‘clock. These switch times are repeated daily.

  • Page 16: Relative Time Function

    Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection One-year time switch This block can detect a time range within 365 days, e.g. from April 13 8 o’clock a.m. to September 28 12 o‘clock p.m..
  • Page 17 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection 2. Program controlled changeover: The system time is being adjusted at the officially fixed dates by means of a function block which is included in this application. •...

  • Page 18: Controlling And Monitoring

    Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Controlling and monitoring The HMI system used in this case is an OP3 or alternatively a TP170A. Only a short overview is given here on operation. A detailed description on operation is given in Chapter 6.
  • Page 19 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection HMI with OP3 The OP3 is a text-based display of the lower performance range. A maximum of 2 lines at 20 characters each can be operated and monitored at once on the device.
  • Page 20 Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection HMI with TP170A The TP170A is a WindowsCE device of the lower performance range. A graphical user interface of 12 cm x 8 cm can be used for controlling and monitoring.

  • Page 21: Standard Components Required

    Warranty, Liability and Support Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Standard components required 2.3.1 Hardware components The following hardware components are required to use the application. Table 2-1 Hardware components required Component MLFB Description...
  • Page 22 It is required only when a radio-controlled clock is to be used. Regardless of this application a STEP7 project including the function block FB77 is available at the following address: http://www.ad.siemens.de/siplus/additions/html_00/doku mentation.shtml Rev. B - final 19.07.2002 22/84...

  • Page 23: Application Software Components Required And Their "Product Features

    Copyright © Siemens AG 2005 All rights reserved BID21669756_Zeitschaltuhr_einfach_DOKU_v20_e.doc Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Application software components required and their "product features" This application was produced using the following application software components:...
  • Page 24 Copyright © Siemens AG 2005 All rights reserved BID21669756_Zeitschaltuhr_einfach_DOKU_v20_e.doc Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Serial No. Name Function description Technical data Ambient Conditions Relative (FB124) The FB “Relative” sets the output to “1”, if at the input “Enable” a –...

  • Page 25: Installation With Simple Setup

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Installation with simple setup The entire application software available for downloading has been compressed in the “timefunc.exe” file. Copy the “timefunctions.exe“ file to a separate folder and launch by double clicking on it. The project is automatically extracted into the specified path including all respective sub- directories.

  • Page 26: Basic Performance Data

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Basic performance data The basic data for the S7 blocks are available in the following table: Table 3-1 Basic data for the function blocks Smallest Largest No.

  • Page 27: Part A2 : Function Mechanisms

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Part A2 : Function Mechanisms Objectives of Part A2 : Part A2 of this document provides the reader with information on the following topics. • Explanation of all function elements •...

  • Page 28: Examples Of Function Mechanisms

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Examples of Function Mechanisms Introduction What will you find here? Every hardware, standard and user software component is examined separately and their functions described. What can you do with it? The example contains some (partial) solutions around the “time switching in the S7”...

  • Page 29: Step7 Application Level

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection STEP7 application level Fig. 4-2 “STEP7 program overview“ gives you all the various elements of the STEP7 program. The individual blocks are described in more detail in the following sub-chapters.

  • Page 30: Absolute Time Switching Functions

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection 4.3.1 Absolute time switching functions The absolute time switching functions include • One-day time switch • Seven-day time switch • One-month time switch • One-year time switch Each of the blocks has the following inputs: •...

  • Page 31: One-Day Time Switch

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Note The input parameter ”EN” and the output parameter “ENO” are default parameters at the S7 blocks. Closer information is available in the documentation and the STEP7 online help.

  • Page 32: Seven-Day Time Switch

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Fig 4-4 Configuration “one-day time switch” Basic data/parameterizability: RAM requirements: day: 760 bytes Instance DB: 52 bytes The parameter “Time_To_Check“ is a structure of the “day_udt“ (UDT1) type.

  • Page 33: One-Month Time Switch

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Basic data/parameterizability: RAM requirements: week: 4750 bytes Instance DB: 48 bytes The parameter “Time_To_Check“ is a structure of the “week_udt“ (UDT2) type. It contains: • Start day 1 to 7: Sunday to Saturday 8: Monday to Friday 9: Saturday to Sunday...

  • Page 34: One-Year Time Switch

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Basic data/parameterizability: RAM requirements: month: 1204 bytes Instance DB: 56 bytes The parameter “Time_To_Check“ is a structure of the “month_udt“ (UDT3) type. It contains: • Start day 1 to 31: corresponds to day in month 32: Last day in month •...

  • Page 35: Relative Time Switch

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Basic data/parameterizability: RAM requirements: year: 1110 bytes Instance DB: 56 bytes The parameter “Time_To_Check“ is a structure of the “year_udt“ (UDT4) type. It contains: • Start month •...
  • Page 36 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection The control parameters for the relative time switch are EnableClock, CheckEdge, Reset and StartTime. The control parameters and the output relate to each other as illustrated in the following pulse diagrams: CheckEdge = 0: EnableCloc...
  • Page 37 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection CheckEdge = 1: EnableCloc CheckEdg StartTim Reset Time active Output Fig. 4-9 Pulse diagram CheckEdge = 1 The block for the relative time switch “relative ” FB124 is parameterized as illustrated in the figure below.

  • Page 38: Additional Functions

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection 4.3.7 Additional functions In addition to the blocks for the absolute time switch and the relative time switch, blocks for summer/winter time changeover as well as for holiday recognition are also supplied.
  • Page 39 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Option: Radio-clock controlled (FB 77 “DCF77_FB”) Optionally the possibility is offered to use a radio-controlled clock for summer/winter time changeover instead of the block described above. In case the radio-controlled option has been selected in the ProTool view, the block FB103 „summer_winter“...

  • Page 40: Holiday Recognition

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Fig. 4-12 Configuration „DCF77_FB“ Basic data: RAM requirements: DCF77_FB: 2960 bytes Instance DB: 58 bytes Holiday recognition The block checks a DB with 30 memory slots for holidays or special days, and sets the output to “1”, if the current day of the system time of the S7- CPU coincides with a data in this DB.

  • Page 41: Hmi System

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection • holiday of “BOOL“ type Value = 1: current day is a holiday or special day Value = 0: current day is no holiday or special day The block for recognizing holidays and special days “holidays”...
  • Page 42 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table 4-1 OP3 views Clock/function Illustration One-month time switch Relative time switch Each view consists of several lines, two of which are always visible at the OP3.

  • Page 43: Operation At The Tp170A

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection 4.4.2 Operation at the TP170A The TP170A is a low-end device. It is based on the standard operating system WindowsCE. The TP170A has 9 views: Table 4-2 TP170A views Clock/function...
  • Page 44 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Clock/function Illustration One-month time switch One-year time switch Relative time switch Summer/wintertime changeover (in the figure the setting „Program-controlled changeover“ is active) Rev. B - final 19.07.2002 44/84...
  • Page 45 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Clock/function Illustration 5 holiday views (only one view is given here as an example) Each view is a graphical user interface which provides input and output boxes.

  • Page 46: Part B: Installation Of The Sample Application

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Part B: Installation of the Sample Application Objectives of Part B: Part B of this document provides the reader with information on the following topics. •...

  • Page 47: Installation Of Hardware And Software

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Installation of Hardware and Software Hardware configuration S7 Hardware configuration For the hardware components required, please refer to chapter 2.3.1. “HW components“. Fig. 5-1 Hardware configuration Set up the components as directed in the manuals for the modules and connect the panel to the S7-CPU via an MPI cable.
  • Page 48 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Optional: hardware configuration with radio clock The SIPLUS DCF77 radio clock module is connected to the voltage supply unit / the SM 321 by means of a shielded 4-wire cable as follows: SM 321 SIPLUS DCF77 E 0.0...

  • Page 49: Software Installation

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Software installation Requirements: STEP7 V5.1 has already been installed with the NCM package for Industrial Ethernet. In addition to STEP 7, ProTool V6 has already been installed on your computer. 5.2.1 Loading the application software into the S7-CPU The simplest way of loading the application software into the S7-CPU is via...
  • Page 50 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Step Action Screenshot In the options box "Zugangspunkt der Applikation" [Interface Parameter Assignment Used] select “CP5611(MPI)“. Click “Eigenschaften” [Properties...]. Enter the MPI address for the PC, in this example the address “4“.

  • Page 51: Load The Application Software Into The Panel

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Step Action Screenshot Open the delivered project in the SIMATIC Manager and select the SIMATIC station. Load the project into the S7-CPU via the menu “Zielsystem >...
  • Page 52 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Step Action Screenshot Make the necessary settings for the transfer operation. Open the menu “Datei > Transfer > Einstellung...“ [File > Transfer > Settings...]. Select “MPI/PROFIBUS DP“ and enter the OP address, “1“...
  • Page 53 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Step Action Screenshot Answer the query whether you want to save the configuration with “Ja“ [Yes]. Subsequently generation is started, and if successful, the project transfer is started.

  • Page 54: Using The Application

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Using the Application For operating the application, respectively one example of a TO170A and a OP3 are delivered in this application. How to use the application is explained for two cases.
  • Page 55 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table 6-1 Switching times of the clocks for application case 1 Clock (Time switch) Switching time Clock enabled Output reset One-day time switch 1 7:00 to 8:30 a.m (D1) One-day time switch 2 6:00 to 8:00 p.m...
  • Page 56 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection The HMI views for operating the application are divided in two parts: • The upper parts contains the input boxes (in white) as well as the buttons necessary for operation.
  • Page 57 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Operating the one-day time switch The following parameters must be set for the one-day time switches: • Switch-on times with hour, minute and second • Switch-off times with hour, minute and second •...
  • Page 58 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Operating the seven-day time switch For the seven-day time switch the following parameters must be set: • Switch-on time with hour, minute and second as well as the respective day of the week •...
  • Page 59 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Clock enabled Start and end-times incl. day or the week Output not reset Today is not a holiday Clock not active Current date/time in the S7-CPU No error Go back to overview...
  • Page 60 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Operating the one-year time switch The following parameters must be set at the one-year time switch: • Switch-on time with hour, minute, second, day and month •...
  • Page 61 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Operating summer/winter time changeover This user interface offers the possibility to define via a button whether the changeover is to be performed program controlled, i.e. by FB 103 „summer_winter“, or if the radio-controlled option is to be activated as you use a radio receiver.
  • Page 62 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Below, an example is illustrated of how the outputs of the individual time switches are connected in the application case 1. This is for controlling valves for example.

  • Page 63: Application Case 2: Pulse Chain

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Application case 2: Pulse chain In this application case a one-day time switch, a seven-day time switch, as well as 3 relative time switches are used, whereby the 3 relative time switches make up a pulse chain.
  • Page 64 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table 6-2 Switching times of the clocks for application case 1 Clock (Time switch) Switching time Clock enabled Output reset One-day time switch 1 8:00 to 12:00 a.m.
  • Page 65 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Operating the one-day time switch The following parameters must be set for the one-day time switches: • Switch-on times with hour, minute and second • Switch-off times with hour, minute and second •...
  • Page 66 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Operating the seven-day time switch For the seven-day time switch the following parameters must be set: • Switch-on time with hour, minute and second as well as the respective day of the week •...
  • Page 67 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Enter start-time with day of the week b 6:00 12:00 Enter end-time with day of the week b 6:00 20:00 Reset Enable clock (1) output (0) Clock active 0 ->...
  • Page 68 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Operating the relative time switch The following parameters must be set for the relative time switch: • Time_To_Check with days, hours, minutes and seconds • Control parameters Below you see a HMI interface for the relative time switch in the configuration view at the OP3: Enter time...
  • Page 69 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Below, an example is illustrated of how the outputs of the individual time switches are connected in the application case 2. For example: Valves are controlled.

  • Page 70: Part C: Program Description

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Part C: Program Description Objectives of Part C: The purpose of this section is to Explain the code details of some core elements in the program Suggest where it might usefully be expanded Requirements This is not an introduction to the STEP 7 STL language.

  • Page 71: Step 7 Program

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection STEP 7 Program The STEP 7 code will not be explained here line by line. This documentation will focus on the core points. Detailed information on the programs may be found in the appropriate sources.
  • Page 72 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table 7-2 Code one-month time switch Code Remarks NETZWERK 4: enst: NOP 0 Check whether the Function” #time_to_check.start_dateday “Last day of the month” has been #temp_startday #time_to_check.end_dateday specified in the start day of in the...

  • Page 73: Relative Time Switch

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Relative time switch For the relative time switch (FB124) the correct evaluation of the individual inputs is important. Depending on whether the clock will be active, whether the time to elapse restarts at every edge or only at the first edge.

  • Page 74: Special Functions

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Special functions The special functions “Summer/winter time changeover” and “Holidays” are briefly discussed below. 7.3.1 Summer/wintertime changeover For the summer/winter time changeover this application offers a program- controlled changeover.

  • Page 75: Holidays/Special Days

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table 7-5 Configuration summer/winter time changeover (radio-controlled) Code Remarks NETWORK 9: CALL "DCF77_FB" , "DCF77_IDB" Input „second clock pulse“ of DCF module SekTakt :=SecClockDCF Data :=DataDCF Input “data”...
  • Page 76 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Table 7-5 Code holidays/special days Code Remarks NETZWERK 2: schl: T #zaehler #jahr Check whether year in the DB DBW [#index] coincides with the current year <>I SPB jnex #index...

  • Page 77: Hmi Interface

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection HMI Interface There are no scripts in the HMI configuration. The views are explained in detail in Chapter 6. Therefore this chapter is kept very short. Changes in the STEP 7 Programs The steps to be performed to adapt the application to your requirements are listed below.

  • Page 78: How Can I Get Several Switch-On/Off Times Into One Time Switch Block

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection How can I get several switch-on/off times into one time switch block? Table 9-2 Several switch-on/off times in one block Step Instruction Note / Instruction Create a new FB in the block container of the SIMATIC Manager and open it.

  • Page 79: What To Do If More Holidays Or Special Days Are Needed

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection What to do if more holidays or special days are needed? Table 9-3 More holidays/special days Step Instruction Note / Instruction Open the DB in which the holidays and special days are stored (DB100 in this example) Increase the number of Array elements to...

  • Page 80: How Can I Save On Instance Dbs

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection How can I save on Instance DBs? Table 9-4 Saving on Instance-DBs Step Instruction Note / Instruction Create a new FB in the block container of the SIMATIC Manager and open it.

  • Page 81: Appendix: Connection Of The Siclock Radio Clock

    Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Appendix: Connection of the SICLOCK radio clock Introduction Within the scope of the present application, the SIPLUS radio clock was used. A viable alternative is the use of the SICLOCK radio clock. This appendix describes the SICLOCK features in a concise from.
  • Page 82 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Hardware components The following hardware components are required for connection to S7-300: Component Order number Description/View SICLOCK DCFRS 2XV9450-1AR06 DCF77 receiver 9 pole DSUB connector 2XV9450-1AR35 For connection to SIMATIC with 5m connection cable...
  • Page 83 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Hardware connection Wiring the SICLOCK radio clock module to the power supply / SM 321 is made as follows: SM 321 SICLOCK E 0.3 Yellow (received signal) Grey (cable screen) Green (supply voltage) Brown (signal and supply ground)
  • Page 84 Time switch based on the S7-300/400 CPUs with simple HMI system including radio-controlled clock connection Software interface and block parameterization Along with the hardware, a disk is supplied that contains all S7 blocks necessary for the SICLOCK DCF77 reception service. These are: FB100, DB100, SFC0, SFC39, SFC40, FC34 These blocks have to be included in the blocks folder of your S7 project.

This manual is also suitable for:

Simatic s7 300

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