small confusion to configuratoin data formats

samsam

Member
Join Date
Dec 2011
Location
jeddah
Posts
33
hi lancie1 still guiet confusion to the last email which you send me you have send data formats as example :
4mA : 0 and 20mA : 16383 but in the ladder program you some other data configuration pleae clarify bcoz what i notice the other configuraiton which you have consider in the attachement ladder program i am expecting is for analog output moduel please do clarify me thanks again waiting for your reply.
 
Well, first off, all PLC analog modules are not created equal. Each brand and model has different digital count ranges and even are user-selectable. Do you wnat current or voltage? Do you want 4-20 mA, 0-20 mA, or -20 to +20 mA? Do you want to use Raw data or Scaled-for-PID data? Is it an Input module or an Output module (they are NOT always the same)?
 
Dear Lancie1,
I want to use current and 4-20mA will be using with scaled-for-PID data and the module is input in this case what data format shall i use iam not using analog output and the analog input module will be 1762-IF4 .thanks well waiting for your reply thanks lancie1 i have reach upto certain point .
 
Okay, then for "Scaled-for-PID", I would try an Input range of 0 to 16383. That is, a 4 miliampere input should produce about 0 counts in your analog input memory location, and 20 miliamperes should produce about 16383 counts. Use those numbers in the SCP instruction to scale your analog input to your desired engineering units (0 to 10 meters I think you said).

TIP: You might want to scale your input to 0 to 100 (Scaled Min = 0, Scaled Max = 100), so that you have better resolution when dividing integer numbers. Then you know that the "100" is really "10.0 meters".
 
Last edited:

Similar Topics

...and I agree. Context: TIA Portal/HMI = KTP1200 (12" screen) In the attached redacted image, the values in the white boxes are entered by the...
Replies
10
Views
714
Hi all, I’m new to programming and want to write a simple routine. Push start button, turns on sensor. 2 second delay before anymore logic read...
Replies
1
Views
330
Hi! I'm wondering if PLCs are used for small-scale production. I've got four machines doing different things with textiles, and I'm exploring the...
Replies
16
Views
1,339
I am looking at an application where I will need to detect small hairline cracks in stamped metal parts. The sensing will need to be done in the...
Replies
10
Views
1,142
Anyone know what the little green triangle on SCREEN 3 means ? See picture Thanks
Replies
2
Views
457
Back
Top Bottom