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Sample Program: PLC code display: Ladder / Graph Logic Monitoring

Created by: Denilson Pegaia at: 4/15/2014 8:28 PM (18 Replies)

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4/15/2014 8:28 PM	Rate (2)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/11/2024 Posts: 4351 Rating: (1452)	Hi, As from V13, the WinCC Professional has a new object: "PLC Code Display". The "PLC Code Display" object is available for the WinCC Runtime Professional. It is used to display the current program status of PLC programs, which have been programmed in the LAD, FBD programming languages. The network to be displayed in the PLC code display is determined by user-defined functions (C scripting). The API Functions used are: - OpenViewerIECPLByAssigment: Monitor a user defined operand (e.g. “coil”) - OpenViewerIECPLByCall: Monitor a user defined operand (e.g. block “input”) Alternatively it is also possible open TIA Portal (no object use) monitoring the user-defined network by API Functions: - OpenTIAPortalIECPByAssigment: Open TIA Portal monitoring a user defined operand (e.g. “coil”). The attached sample program show an example how this functions could be used: direct on a button (on click) or as Script (pre packed for easy use). TIPS: The Project path (for open TIA portal) uses “\\” in script but just “\ “ by parameter passing value. For TIA Portal use, it is necessary a WinCC intern string variable to load the eventual asynchrony error information. The Ladder visualization is restricted to most usual instructions: The following FBD instructions are supported in the PLC code display: • AND • OR • EXCLUSIVE OR • NOT • Set output • Reset output • Assignment • Reset/set flip-flop The following LAD instructions are supported in the PLC code display: • Normally open contact • Normally closed contact • Negated contact • NOT • Set output • Reset output • Assignment • Reset/set flip-flop It is not recommended to try to monitor a PLC logic that was changed while the WinCC is running. Attachment CodeView.zip (1653 Downloads)
	Last edited by: Pegaia at: 10/3/2014 11:29 AM Last edited by: Pegaia at: 4/19/2014 2:08 PM Last edited by: Pegaia at: 4/16/2014 3:33 PM Denilson Pegaia Siemens Industry Sector Technical Support
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This contribution was helpful to 5 thankful Users EPiccoli Navnag tony_sun nani1101 CharlesEstrada

10/3/2014 11:33 AM	Rate (1)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/11/2024 Posts: 4351 Rating: (1452)	Hi, I post here a new version of the open sample project that includes S7 GRAPH. TIPs: The object S7 GRAPH overview should be linked to a S7 GRAPH instance DB signal (e.g. OFF_SQ). The S7 GRAPH block has, as default, their signals not set to be visible / accessible from HMI / WinCC. So, to make possible to S7 GRAPH overview works properly, it is necessary to change this setting. It is made open the S7 GRAPH block, open menu -> Edit -> and setting the attribute “Internal parameters visible/accessible from HMI. To show the S7-GRAPH in the object PLC Code Display, it is necessary to update the WinCC V13 / STEP7 V13 (I suggest the last update, which at this moment is update 4). TIPS about the sample project: S7 GRAPH viewer was project in the Screen2. To run the S7 GRAPH code, set Supervision 1, Supervision 2, Supervision 3 and Supervision 4 signals. To go through the steps, set the Transition 1, Transition 2, Transition 3 and Transition 4 signals. PS.: Thanks to Andreas Hoh and to the Technical Support team that help me with this tip Attachment CodeView.zip (1178 Downloads)
	Last edited by: Min_Moderator at: 10/6/2014 1:53 PM Reattach attachment Last edited by: Pegaia at: 10/3/2014 12:38 PM Denilson Pegaia Siemens Industry Sector Technical Support
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This contribution was helpful to 3 thankful Users Marciano tamadrum E.Ridy

10/11/2014 8:54 AM	Rate (0)
tony_sun Posts: 3 Rating: (0)	Hellow Mr. Pegaia I test that your "codeview" project on WinCC V13 Update4 ,and my PLC is S7 1214C ,the Code Display control display "the object information not found in cross reference", do you get that error in your test? What is the least request of that control? (example--use s7 1200firmware v2.2 or v3.0?)
tony_sun Posts: 3 Rating: (0)	Last edited by: tony_sun at: 10/11/2014 9:00 AM
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10/12/2014 2:31 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/11/2024 Posts: 4351 Rating: (1452)	Hi, I tested just wiht S7-1500/PLCSim. I will test it with 1200 just along the week... Did you compile the PLC first, HW/SW rebuild all, and affter that the WinCC SW rebuild all?
	Denilson Pegaia Siemens Industry Sector Technical Support
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10/13/2014 10:21 AM	Rate (0)
tony_sun Posts: 3 Rating: (0)	Hi, I tested with S7 1500(real PLC) and S7 1200(real PLC), the S7 1500 is ok,and the S7 1200 is display that error -- "the object information not found in cross reference". I always compile PLC first( HW/SW rebuild all), and then do the WinCC SW rebuild all. If you test the S7 1200, please tell the result to me, thank you very much.
tony_sun Posts: 3 Rating: (0)	Last edited by: tony_sun at: 10/13/2014 10:22 AM
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10/13/2014 12:25 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/11/2024 Posts: 4351 Rating: (1452)	Hi, I tested with a S7-1200 FW4.0 CPU, and it worked. Notes: 1 - To communicate, a 1200 FW4.0 need that the GET/PUT access permission should be set. 2 - S7-1200 haven't Graph yet. 3 - Match the PLC name in the buttons. 4 - Check if the life bit is running. Here there is the sample project that I used. Attachment CodeView.zip (682 Downloads)
	Last edited by: Min_Moderator at: 10/13/2014 3:27 PM Reattach attachment Denilson Pegaia Siemens Industry Sector Technical Support
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10/15/2014 3:32 AM	Rate (0)
tony_sun Posts: 3 Rating: (0)	Thank for your test ! I'll test the new project.
tony_sun Posts: 3 Rating: (0)
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10/15/2014 11:31 AM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/11/2024 Posts: 4351 Rating: (1452)	you are welcome :)
	Denilson Pegaia Siemens Industry Sector Technical Support
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1/1/2015 4:48 AM	Rate (0)
siemensuser6666 Posts: 1 Rating: (0)	DearPegaia, I am trying to run this TIA project, but I am having issues. Where may I find more information on the "open sample program" you mention, with details of how it works? I have no other inforation on this program, other than what is on this page. Would you provide me with links to the relevant pages so as I may read up on the program? I hope you can assist. Thanks
siemensuser6666 Posts: 1 Rating: (0)
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2/20/2016 6:31 AM	Rate (0)
Harish G Advanced Member Joined: 5/25/2015 Last visit: 5/11/2023 Posts: 44 Rating: (1)	Denilson Pegaia Hi, I tested just wiht S7-1500/PLCSim. I will test it with 1200 just along the week... Did you compile the PLC first, HW/SW rebuild all, and affter that the WinCC SW rebuild all? Hello Mr. Denilson, I want to jump from WinCC alarm to step 7 by LoopIn + GetKopfupawl . Is it possible to do so?

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