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WinCC Thin Clients

Created by: EULER1313 at: 10/8/2008 9:40 AM (5 Replies)

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10/8/2008 9:40 AM	Rate (0)
EULER1313 Posts: 86 Rating: (1)	Hi All, please i want to know about the operation of the Thin Clients... can they act independently wihtout the need of host application (servers)? Must they be attached to HMI system? are they only panels? Thanks In Advance
EULER1313 Posts: 86 Rating: (1)
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10/8/2008 10:30 AM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 12/7/2024 Posts: 12301 Rating: (2692)	Hello Euler1313; A thin client is a modern day equivalent of the "dumb terminals" used in mainframe computers about 20 years ago. The terminal was basically a screen and a modem, connected to the VAX that did all the processing. If a connection was available and your security level was valid, you could run an instance of a program (on the server machine) through the terminal you were connected on. No processing was done on the terminal, only access. Today, Citrix and later ACP generated software interfaces that allowed Windows computers to connect to a lan-enabled server where all of the required software was avalable. All you had to install locally (with ACP anyway) was a Citrix license and a linux-based interface on a very small (computing power-sized) machine to connect to the working server. If your machine broke down, replacing it was cheap and easy, all your software and authorizationsbeing on the server. Now, if the server broke down (and they had to be comparably power monsters, especially in memory), that was another story.. ;-) Have a look at ACP's documentation if you want to study more about the general setup of thin clients today: http://www.thinmanager.com/index.shtml Siemens proposes thin clients with WinCC using either PCs or MPxxx panels, and a Webserver license. Look up the following application note to get the most up-to-date information on the subject: http://support.automation.siemens.com/WW/view/en/28309119 Hope this helps, Daniel Chartier

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10/8/2008 10:58 AM	Rate (0)
EULER1313 Posts: 86 Rating: (1)	Thank you dchartier for your reply, I got it... I want to ask another question, Does MP277 act as a Thin Client and must be connected to a server? Or it can work independently?
EULER1313 Posts: 86 Rating: (1)
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10/8/2008 12:50 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 12/7/2024 Posts: 12301 Rating: (2692)	Hello Euler1313; To use MP277 as a Thin client you must make modifactions to the licensing; see the application note I pointed to earlier. If you download your WinCC Flexible program to the MP and connect it to the PLC correctly, it will run stand-alone an an HMI. Hope this helps, Daniel Chartier

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10/8/2008 2:06 PM	Rate (0)
EULER1313 Posts: 86 Rating: (1)	Thank you alot Daniel....
EULER1313 Posts: 86 Rating: (1)
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10/8/2008 3:23 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 12/7/2024 Posts: 12301 Rating: (2692)	Hello again Euler1313; Sorry I thought thast my earlier post had more precise information on MP 277 thin client configuration. Here is a link to a recent post that discusses this issue: /tf/WW/en/Posts/21797 Hope this helps, Daniel Chartier

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