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Change PID value TP177Micro ---> S7-226

2/24/2009 6:49 PM	Rate (0)
Ason Posts: 20 Rating: (0)	Good evening, i wanna change a PID loop from a Siemens TP 177 Micro panel and the PLC is a Siemens s7-226 the value for p, i, d, is stored in VD6 1.0 VD10 10.0 VD14 0.0 they are floating points and now i wonder how to set it up right on the panel. i have bean trying almost everything but cant get it right i only gets xxxxx on the panel or the closest is 1 when it should be 1.0 what´s the data type and do i need to scale or what? Thanks,
Ason Posts: 20 Rating: (0)
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2/25/2009 11:25 AM	Rate (0)
ZAK Gold Member Joined: 5/8/2006 Last visit: 10/16/2024 Posts: 1085 Rating: (77)	Hi You should check the connection settings in WinCC flexible and Micro/Win. - PPI or MPI network - Baud rate - Device address - Cable If youinsert an alarm window inyour project and activate the alarm class"System"in the properties of the alarm window you getsomeinformation and error messagesof your HMIdevice. Bye

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2/25/2009 11:42 AM	Rate (0)
Ason Posts: 20 Rating: (0)	I got the Panel up and running and have bean that in a year now, so there isnt any problem with connection, the problem is how to show floting points in the right way on the panel. what datatype shuold i use on the tag, do i need to scale it?
Ason Posts: 20 Rating: (0)
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2/25/2009 11:59 AM	Rate (0)
ZAK Gold Member Joined: 5/8/2006 Last visit: 10/16/2024 Posts: 1085 Rating: (77)	Hi You need the datatype REAL (= 4 Bytes) without any scaling. Bye

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2/25/2009 12:44 PM	Rate (0)
Ason Posts: 20 Rating: (0)	think that i tryied that lasttime i was at the plant, and then i got a long number and whitout any decimal point Maybe i have wrong format pattern in the IO field? Attachment io field.jpg (199 Downloads)
Ason Posts: 20 Rating: (0)
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2/25/2009 1:24 PM	Rate (0)
ZAK Gold Member Joined: 5/8/2006 Last visit: 10/16/2024 Posts: 1085 Rating: (77)	Hi Yes you can use the following format pattern: e.g. unsigned"9999999.99" or unsigned "9999.999" ... signed "s99999.99" or signed "s9999.999" Bye

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3/3/2009 9:36 AM	Rate (0)
Ason Posts: 20 Rating: (0)	Working with this settings: TAG: real IO Field: format type:decimal format pattern: 99.99 Thanks for the help..
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