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NORM_X & SCALE_X

Created by: edwin saputra at: 2/12/2014 6:00 AM (6 Replies)

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2/12/2014 6:00 AM	Rate (0)
edwin saputra Experienced Member Joined: 2/12/2014 Last visit: 5/28/2023 Posts: 158 Rating: (0)	I have a problem with my program of PLC Siemens S7-1200 1214 . I use expand module AI (Analog Input). I have references example for NORM_X and SCALLING of s71200_system_manual_en-US.pdf pages 221. I fill the min = -27648 & max = 27648 of NORM_X, and then i connect to Scale_x with min = 0 & max = 300. when i inject the voltage to high condition, i don't get the value 300. i use this system of console with VB.net. I use module of AI (analog input) SM 1231 AI8 6ES7 231-4HF30-0XB0. i change -5volt/+5volt at voltage range.

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2/12/2014 7:50 AM	Rate (0)
Rajesh_s Experienced Member Joined: 10/20/2011 Last visit: 12/12/2024 Posts: 102 Rating: (3)	Dear saputra, Please try to use Zero as minimum value and 27648 in maximum value in norm_x block,and try it.

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2/12/2014 8:18 AM	Rate (0)
edwin saputra Experienced Member Joined: 2/12/2014 Last visit: 5/28/2023 Posts: 158 Rating: (0)	thanks for your replied, rajesh_s. but i have tried it too, i'm never get the value 300. when i try to inject high condition the analog input, should the output of NORM_X is 1. but I still get the wrong value (0.0), which is supposed to be 1.

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2/12/2014 8:35 AM	Rate (0)
Rajesh_s Experienced Member Joined: 10/20/2011 Last visit: 12/12/2024 Posts: 102 Rating: (3)	Dear saputra, Please notify in online the value at analog input is read and view Scale_x block output.Weather the Analog input is not read please check the status of input.

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2/12/2014 9:08 AM	Rate (0)
edwin saputra Experienced Member Joined: 2/12/2014 Last visit: 5/28/2023 Posts: 158 Rating: (0)	yes, i will to try it. I am weird with its analog input values. I think by entering a zero of min value and 27648 of max value , then the output from the NORM_X connected to the input value of SCALE_X with min 0 and max value of 300 is enough to get the correct value, and then sent to VB.net.Do you agree?

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2/12/2014 10:12 AM	Rate (0)
Rajesh_s Experienced Member Joined: 10/20/2011 Last visit: 12/12/2024 Posts: 102 Rating: (3)	yeah,thats it

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This contribution was helpful to 1 thankful Users edwin saputra

8/18/2014 10:07 AM	Rate (0)
edwin saputra Experienced Member Joined: 2/12/2014 Last visit: 5/28/2023 Posts: 158 Rating: (0)	success

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This contribution was helpful to 2 thankful Users 0_Einstein Mo.Sa

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