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Table of Contents Table of Contents Warranty and Liability ....................2 Task and Solution ....................4 Task description ................... 4 Possible solutions ................. 4 Fundamentals on “Shared Device” ..............6 Configuration ..................... 8 Infrastructure information ..............8 Configuring a “Shared Device” ............. 9 3.2.1 Configuration of project 1 ..............
1 Task and Solution Task and Solution Task description Description For bigger or widely dispersed plants, multiple IO controllers are frequently used. Every peripheral module of an IO device is assigned to a particular IO controller. If sensors spatially close to one another must send data to different IO controllers, multiple IO devices are required.
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1 Task and Solution Advantages The solution presented here offers you the following advantages: Lower costs through the reduction of additional IO devices and modules. Real time capture in several CPUs. Lower space requirements through the reduction of additional IO devices and modules.
2 Fundamentals on “Shared Device” Fundamentals on “Shared Device” Explanation of terms An IO device whose modules are used by different IO controllers is referred to as “Shared Device”. The access to the modules of the “Shared Device” is split up between the different IO controllers.
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2 Fundamentals on “Shared Device” Example: A CPU supports send clocks of 0.25 ms or higher. A configured IO device also supports send clocks of 0.25 ms or higher, another supports send clocks of 1 ms or higher. In this case, you have the possibility to set a short send clock of 0.25 ms for the CPU.
3 Configuration Configuration Infrastructure information Required components For the use of the “Shared Device” function, the following components are required: A CPU 1516-3 PN/DP (Project 1) A CPU 1511-1 PN (Project 2) Two SIMATIC MEMORY CARDs AN ET 200SP station as IO device with “Shared Device”...
3 Configuration Configuring a “Shared Device” The following describes how a decentralized peripheral device is configured as “Shared Device” with STEP 7 from version V13 SP1 or higher. The description is limited to two IO controllers from the S7-1500 family sharing a “Shared Device”...
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3 Configuration 4. Select the parameter group “Ethernet addresses” and, under “Interface networked with”, click “Add new subnet”. Figure 3-1 Result The interface is now connected to a new subnet of the suitable subnet type. When this is done, the address parameters of the interface are set consistently automatically.
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3 Configuration Configuring the access to the “Shared Device” The previously implemented and networked ET 200SP station shall now be configured as “Shared Device”. Proceed as follows: 1. In the graphical view, select the ET 200SP station and perform a double click. Mark the head module to display the properties of the interface module in the inspector window.
3 Configuration 3.2.2 Configuration of project 2 Preparation Open another instance of the TIA Portal configuration software and create a new project. Implementing the devices Via the project navigation, insert a S7-1500 CPU (here CPU 1511-1 PN). It gets the name “PLC_2”.
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3 Configuration 4. Select the parameter group “Ethernet addresses” and, under “Interface networked with”, click “Add new subnet”. Figure 3-4 Result The interface is now connected to a new subnet of the suitable subnet type. When this is done, the address parameters of the interface are set consistently automatically.
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3 Configuration Configuring the access to the “Shared Device” The previously implemented and networked ET 200SP station shall now be configured as “Shared Device”. Proceed as follows: 1. In the graphical view, select the ET 200SP station and perform a double click. Mark the head module to display the properties of the interface module in the inspector window.
3 Configuration 3.2.3 Adjusting the real time settings To make sure that all IO controllers and “Shared Devices” are operated with the appropriate send clock and the update times are correctly calculated due to the communications burden, you need to adjust and check the following settings. Proceed as follows: 1.
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3 Configuration 3. For every IO controller that has access to modules of the “Shared Device”, you need to set the same send clock: a. In project 1 / project 2, mark the interface of the IO controller in the network view.
3 Configuration 3.2.4 Compiling and loading Save and compile the configurations for the different IO controllers. To load the project data, select each controller in the project navigation and load the project into the respective module. Further information on loading can also be found in the TIA Portal Online Help or in the system manual (\4\).
3 Configuration Diagnostics with “Shared Device” Description If during an ongoing operation, a module of the “Shared Device” fails or is removed, the controllers react differently to the failure of the module. The reaction of the IO controller depends on its configured access to the module. Note If you remove more than one peripheral module or the server module, this results in a station stop.
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3 Configuration Reaction of “Shared Device” The ET 200SP detects a missing module and the error LED flashes in operation mode “RUN”. The “Diagnostic status” of the “Shared Device” displays, that the module exists and is “OK”, even if the module has in fact been removed or is faulty. The following illustration shows the “Diagnostic status”...
4 References References Table 11/2016-1 Topic Title Siemens Industry http://support.industry.siemens.com Online Support Download page of the https://support.industry.siemens.com/cs/ww/de/view/1097 entry 41600 SIMATIC PROFINET https://support.industry.siemens.com/cs/de/de/view/49948 with STEP 7 V13 STEP 7 Professional https://support.industry.siemens.com/cs/de/de/view/10901 V13 SP1 1420 ET 200SP Manual https://support.industry.siemens.com/cs/ww/de/view/8413 Collection 3942 History...