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Vlv2WayL implementation question

Created by: Giedrius_Kai at: 3/26/2014 8:03 AM (9 Replies)

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3/26/2014 8:03 AM	Rate (0)
Giedrius_Kai Experienced Member Joined: 1/16/2012 Last visit: 9/8/2022 Posts: 72 Rating: (3)	Hello, I'm pretty new to PCS7 and I'm struggling with Vlv2WayL to make it work as I want. Maybe it's not possible or it's possible but slightly different. I want to control a 2-way valve (left/right) with end position indications. There is no home position, just two outputs for left and right. Q: Has the Vlv2WayL block inputs for end positions like VlvMotL block (FbkClose/FbkOpen)? If yes or it has something similiar, is it possible to turn off CtrlVx outputs when these positions are reached? Maybe it's not possible to achieve what I want with Vlv2WayL and I have to use VlvMotL block with modified pictures that indicate left and right position. If it's possible maybe I can get an example. Thanks for you help in advance. Regards, Giedrius K.

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3/27/2014 6:16 AM	Rate (0)
Maraitorzzzzz Posts: 140 Rating: (7)	Hello, Which PCS 7 Version and APL library version you are using?
Maraitorzzzzz Posts: 140 Rating: (7)
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3/27/2014 7:18 AM	Rate (0)
Giedrius_Kai Experienced Member Joined: 1/16/2012 Last visit: 9/8/2022 Posts: 72 Rating: (3)	I'm using PCS7 V8 Upd1 and PCS7 AP Library V8.0

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3/27/2014 10:07 AM	Rate (0)
crazyCow Gold Member Joined: 12/4/2009 Last visit: 10/22/2024 Posts: 453 Rating: (136)	Dear Giedrius_Kai, I had similar situation with Vlv2WayL valve: physical situation was that real valve has only two positions (left or right). But, as You have already noticed, Vlv2WayL assumes that you have three actuators (V0, V1 and V2) and using various output combinations (0-7) you activate theese outputs. Also, all three mentioned acutoators have their own feedback (which can be turned off). Also, there is a problem with PLC startup and neutral (Pos0) position. We have managed to acheive our goal, but if I had to do it again, I'd rather use VlvL or VlvS with oue control output and modified block icon/faceplate. Hope this helps. Regards.
	Last edited by: crazyCow at: 3/27/2014 10:10 AM Last edited by: crazyCow at: 3/27/2014 10:08 AM If this post actually helped, you may consider using the Rate button above.
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3/27/2014 1:57 PM	Rate (0)
Giedrius_Kai Experienced Member Joined: 1/16/2012 Last visit: 9/8/2022 Posts: 72 Rating: (3)	I played with VlvL bit, but it has only one control output. So, I'd need to do modifications to the standard block again... I think the best solution for my task is to modify VlvMotL block icon/faceplate. It does everything what I want, but the icon is a different. Any other suggestions?

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3/28/2014 3:30 PM	Rate (0)
No Name Posts: 220 Rating: (11)	Hi, i think you should try to change the Icon, when this chart the best solution for you project is. Maybe you can findheresome informations, which can help that the icon don't change by every complil of your OS.
No Name Posts: 220 Rating: (11)
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3/31/2014 8:53 AM	Rate (0)
Giedrius_Kai Experienced Member Joined: 1/16/2012 Last visit: 9/8/2022 Posts: 72 Rating: (3)	Hi, I've already made a decision to modify the block icon. But there is another challange to find a software which allows to modify .emf files. If I edit an original icon and save it in other format it loses its quality. What's the best way to modify existing .emf icon pictures?

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3/31/2014 9:13 AM	Rate (0)
jumo Bronze Member Joined: 11/16/2012 Last visit: 3/22/2024 Posts: 227 Rating: (31)	Hi, I think Microsoft Visio is a good tool for editing the EMF-files. Regards jumo

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3/31/2014 10:31 AM	Rate (0)
Giedrius_Kai Experienced Member Joined: 1/16/2012 Last visit: 9/8/2022 Posts: 72 Rating: (3)	But once you ungroup and group again all icon items is not the same as it was. How is it possible to keep the initial icon format and view?

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4/1/2014 3:04 PM	Rate (0)
Ralfinio Posts: 567 Rating: (107)	Hi, may the manual "APL Style Guide"will help! Under chapter 6.3 "Adapting block icons (overview)" a procedure is how to make changes on block icon is described.
Ralfinio Posts: 567 Rating: (107)
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