BCD to Integer conversion

Hi all,

I am quite new to PLC programming, so pardon my noob-ness.

First, I have counters & timers in my program that I use to calculate total units/pass. But these functions are counted in BCD & when I need to multiply them, I tend to get weird things...

My current ladder program is something like that.

Counter for total Pass (D2000) --> value of total pass X 100 (D2001) --> D2001 / Total tested --> Yield (in percentage)

When I set them at the default setting (all in BCD), the calculation for the multiply & division will go wrong.
When I set them as Integer, the initial calculation for the counters will go wrong because they count from 1-9, 16-25...

The test box on my UI reads integers.

Someone please help me..!
Thank you in advance.

Looks like an old Omron. Change CX-P to read in BCD for correct figures and make sure multiply and divide are BCD not binary.

See this:
0007(hex)=0007(bcd)

Binary multiply:
0007*0007==(0000 0111)*(0000 0111)==(0000 0000 0011 0001)==0031(hex)

BCD Multiply:
0007*0007==0049(BCD)

Convert all data from BIN to HEX than use BCD multiply/divide to get a correct reult.