Omron CX-Programing SCL not working!

I am trying to scale my analog input from 1-5V to 0 to 1000. My parameters are
D290
D290 + 1 = 0000
D290 + 2 = 0064 (1V)
D290 + 3 = 1000
D290 + 4 = 01F4 (5V)
All entered through Memory

I can see my input is 0 - 1000 from 0 - 10V however, my final variable D150 returns 0 BCD, no matter what my input is.

What am I doing wrong??

If it is one the later PLCs you can use this. http://forums.mrplc.com/index.php?/files/file/996-analog-scaling-function-block/

Sooo ... you have it entered as SCL(194) D290 D291 D150 ???

From what I understand the parameters for SCL take up 3 additional addresses including D290. So D290 + 1 + 1 + 1 ie D290 , D291, D292, D293.

In the memory I wrote out as the following
290 : 0000 (BCD, according to manual for instruction)
291 : 0064 (Hex for 1V, according to manual for instructions)
292 : 1000 (BCD again)
293 : 01F4 (Hexadecimal for 5V)

D150 is my output for which I am expecting a BCD value, but it seems all I see is 0.

My analog input, A642, reads 0 - 1000 in decimal. 1000 being 10V, which is the maximum intended value for the analog input.

I have it written out as SCL(194) A642 D290 D150 .

Thanks again!

Use the scaling function in my post above - I hate function blocks but love this one and use it all the time. Also you do not mention which scaling function you are using - there are 3 in the later Omron PLCs and then there is APR for non linear functions. Which PLC? Which analogue card? Give us the important information as well please - some of the older analogue cards could be scaled in the card - was really easy.

maybe,

BobB said:

Use the scaling function in my post above - I hate function blocks but love this one and use it all the time. Also you do not mention which scaling function you are using - there are 3 in the later Omron PLCs and then there is APR for non linear functions. Which PLC? Which analogue card? Give us the important information as well please - some of the older analogue cards could be scaled in the card - was really easy.

Click to expand...

I am using a CP1L-EM30DR, it has 2 built in analog ports which seem to work fine. I am using SCL (194). I will try that function block out.

Thanks

How do I import instructions in CX-Programmer? I want to try that analog scaling instruction.

Entry of Advanced Instructions 1 - Useful Functions
http://www.fa.omron.com.cn/data_pdf/mnu/r132-e1-05_cx-programmer.pdf?id=1605

Here is how to look up the instructions.

Regards,

Analog scale instruction works like a charm! Thanks!