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Problem in Showing Real Format

Created by: Pouya_PCS at: 7/21/2009 9:43 AM (9 Replies)

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7/21/2009 9:43 AM	Rate (0)
Pouya_PCS Posts: 69 Rating: (0)	I wrote ablock for my ananlog valuesthat has a Real format output. I put this value in Double word in one DB. Now, when I show it in winCC(in 99.99 structure) the I/O bar shows ***! Then, I changedstructure to 999999999.99999999 fomat in order to see the figures. But it was something bizzare!! When my output in step7 is 97.65625 the winCCreveal 01120096256.0000. Hw can Ishow my value like this : 97.65 ??? Thanks in advance!
Pouya_PCS Posts: 69 Rating: (0)
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7/21/2009 10:13 AM	Rate (0)
Ammy Platinum Member Joined: 4/19/2008 Last visit: 11/21/2024 Posts: 1525 Rating: (159)	Dear Pouya_PCS, Please tell me what you have define when creating the tag it must be "Floating-point number 64bit IEEE 754", to show the Real value representation in WinCC. please checked this same. Ammy
	Ammy New for every one.............. “No duty is more urgent than that of returning thanks.” If Problem Solved......! I can't help you privately - please post in the Forums
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7/21/2009 10:52 AM	Rate (0)
AjayG Silver Member Joined: 5/14/2008 Last visit: 9/12/2025 Posts: 20 Rating: (2)	Dear Ammy, when creating the tag it must be "Floating-point number 32 bit IEEE 754", and not 64 bit to show the Real value representation in WinCC.

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7/21/2009 11:08 AM	Rate (0)
Pouya_PCS Posts: 69 Rating: (0)	Dear Ammy, My previous data type was Unsigned 32-bit value and, I changed it to Floating point number 32-bit IEEE 754, but still no change in my screen. 97.65625 will be shown 1120096000.00 !!
Pouya_PCS Posts: 69 Rating: (0)
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7/21/2009 11:49 AM	Rate (0)
Ammy Platinum Member Joined: 4/19/2008 Last visit: 11/21/2024 Posts: 1525 Rating: (159)	Dear Pouya_PCS, sorry it is 32 bit instead of 64 bit. Please send me the DB location Screen Shot & WinCC TAG screen Shot to undersatnd the problem. it must be work with above setting. Ammy
	Ammy New for every one.............. “No duty is more urgent than that of returning thanks.” If Problem Solved......! I can't help you privately - please post in the Forums
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7/21/2009 11:52 AM	Rate (0)
AjayG Silver Member Joined: 5/14/2008 Last visit: 9/12/2025 Posts: 20 Rating: (2)	Dear Pouya_PCS, Where in S7 you are seeing 97.65. please check in online Vat table. May be the DB is overwritten by some other part of logic. also check cross referenceof PLC program

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7/21/2009 1:35 PM	Rate (0)
Pouya_PCS Posts: 69 Rating: (0)	Dear all, In order to clarify the situation, please refer to monitor.jpg. It's depicted that both figures are identical; one i in decimal and another one is in floating mode. I think the problem is that WinCC I/O bar doesn't have floating mode. It has Binary, Decimal, String and Hex. Attachment Monitor.jpg (124 Downloads)
Pouya_PCS Posts: 69 Rating: (0)
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7/21/2009 1:58 PM	Rate (0)
Pouya_PCS Posts: 69 Rating: (0)	Additionally you can check the configuration of tag. Again I think problem is I/O bar. What else can I use? Attachment tag_prop.jpg (145 Downloads)
Pouya_PCS Posts: 69 Rating: (0)
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7/21/2009 8:41 PM	Rate (0)
Phantom75 Posts: 2661 Rating: (279)	Hi Pouya_PCS, The Adapt format should be FloatToFloat. Check why it is FloatToSignedDword in your case. Regards
Phantom75 Posts: 2661 Rating: (279)
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7/22/2009 9:17 AM	Rate (0)
Pouya_PCS Posts: 69 Rating: (0)	Dear Phantom75, Your solution was correct. I changed it ro FLoatToFloat and it worked. Thanks to all!
Pouya_PCS Posts: 69 Rating: (0)
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