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scl language scalling for my level sensor

Created by: bfelixjo at: 11/7/2014 12:09 PM (7 Replies)

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11/7/2014 12:09 PM	Rate (0)
bfelixjo Posts: 24 Rating: (1)	excuse me :D i have a final project for my college i want make scl language scalling for my level sensor my level sensor work on 5v DC when the tank is empty my voltage 3,56volt and full 4,4 volt every 1 cm up , will up the value 0.05 volt / cm what the algorithm for linear up value? so in the DB will show 1cm 2cm 3cm 4cm 5cm? any idea? -------------------------- New subject after splitting from SCALE and UNSCALE.
bfelixjo Posts: 24 Rating: (1)	Last edited by: Min_Moderator at: 11/7/2014 2:39 PM Splitted Last edited by: bfelixjo at: 11/7/2014 12:10 PM
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11/7/2014 2:57 PM	Rate (0)
bfelixjo Posts: 24 Rating: (1)	thx for move:D
bfelixjo Posts: 24 Rating: (1)
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11/7/2014 3:11 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 1/24/2025 Posts: 15556 Rating: (2467)	bfelixjo excuse me :D i have a final project for my college i want make scl language scalling for my level sensor my level sensor work on 5v DC when the tank is empty my voltage 3,56volt and full 4,4 volt every 1 cm up , will up the value 0.05 volt / cm what the algorithm for linear up value? so in the DB will show 1cm 2cm 3cm 4cm 5cm? any idea? -------------------------- New subject after splitting from SCALE and UNSCALE. For S7-1200, use NORM_X to normalize your signal between 0.0 and 1.0 using 3.56 to 4.40 as your input signal for 0.0 and 1.0 (0 to 100%). Now use the 0-1 NORM_X output as your SCALE_X input. Set the range for 0.0 to 100.0 for your scale and now you have a scaled signal representing empty and full. Be aware you need to check the input is between the established bounds and take action to ensure what signal you feed to the NORM_X block fits within the bounds you set. Perhaps using the between comparison block..... You can trigger a fault action perhaps if it is below empty or over full. The help files for these should help clarify how they are used.
	science guy
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11/7/2014 3:16 PM	Rate (0)
bfelixjo Posts: 24 Rating: (1)	i use s7-300 with sm analog input 14 bit so it will automatic linear increase sir? oh i know so i must make mathematic subtitute 4,4 in word = 27000 3,56 in word = 23000 so 27000=4,4X + B 23000=3.56X+B - ============== 4000 =0.84x x= 400000/84 so the x in the constanta for variable?
bfelixjo Posts: 24 Rating: (1)	Last edited by: bfelixjo at: 11/7/2014 3:24 PM
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11/7/2014 3:35 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 1/24/2025 Posts: 15556 Rating: (2467)	bfelixjo i use s7-300 with sm analog input 14 bit so it will automatic linear increase sir? oh i know so i must make mathematic subtitute 4,4 in word = 27000 3,56 in word = 23000 so 27000=4,4X + B 23000=3.56X+B - ============== 4000 =0.84x x= 400000/84 so the x in the constanta for variable? For S7-300, just use the SCALE block. Give it the extremes for each value, 23000 and 27000 for your 0 and 100% values. It will output the scaled version of the input signal (scaling counts to %).
	science guy
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11/7/2014 3:40 PM	Rate (0)
bfelixjo Posts: 24 Rating: (1)	fc 105 sir? i cant open inside of fc 105 sir because i need it the algorithm of fc 105 like c borland language , any suggestion?
bfelixjo Posts: 24 Rating: (1)	Last edited by: bfelixjo at: 11/7/2014 3:47 PM
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11/7/2014 3:48 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 1/24/2025 Posts: 15556 Rating: (2467)	bfelixjo fc 105 sir? In TIA Portal, instructions have names, not numbers. Maybe hidden from us they have numbers, but you cannot search for them by number in the instruction pane, only by name. SCALE Found in instructions pane: Basic Instructions -> Conversion -> SCALE block.
	science guy
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11/9/2014 5:23 PM	Rate (0)
William_B Posts: 5225 Rating: (1198)	bfelixjo fc 105 sir? i cant open inside of fc 105 sir because i need it the algorithm of fc 105 like c borland language , any suggestion? Hi. You use the instruction as a "black box" / library call. Your access to the inside if the instruction is locked out.. but you do not need it. Put a call to the block in your coding and give the parameters values. There are some examples in the STEP7 / STEP7 Lite conference if you have any doubts. Helpful? w
William_B Posts: 5225 Rating: (1198)
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