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tp177 screen set value

6/4/2007 10:49 PM	Rate (0)
Sean Greaves Experienced Member Joined: 9/27/2006 Last visit: 1/17/2022 Posts: 62 Rating: (0)	Hi I am trying to set an analogue value in a data block address using the set value function, i compileand download with no problems. Pressing the button on the screento access the new value nothing happens, what am i doing wrong, please help. Thanks Gengus

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6/5/2007 8:11 AM	Rate (0)
Nemo Posts: 3149 Rating: (172)	Hi, please check this: - can you write/read values to your S7 via VAT (S7-CPU >S7-program> block container > VAT) - which settings are made in your PG/PC-interface? - did you activate in WinCC flexible > communication > connection >"cyclic operation"? nemo
Nemo Posts: 3149 Rating: (172)
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6/7/2007 9:16 PM	Rate (0)
Sean Greaves Experienced Member Joined: 9/27/2006 Last visit: 1/17/2022 Posts: 62 Rating: (0)	Hi Nemo Thanks for the help, I am still very new to Siemens programming, I managed to load data into the data blocks, I didnt know global data blocks 1st need opening in OB1 before they start working????? Cheers Gengus

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6/8/2007 6:24 AM	Rate (0)
Nemo Posts: 3149 Rating: (172)	Hi perhaps this getting started can help you over the first hurdles...chapter 5? http://support.automation.siemens.com/WW/view/en/18652511 nemo
Nemo Posts: 3149 Rating: (172)
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