Error counting

[Hesam Kamalan]

Hi there,
i am writting a program for petrol pump.we have a shaft encoder that rotates with streem of petrol, and two counters, after counting we have two varius numbers. error is about 1%. i write much more programs for correcting of this error, but we can not find that where is error. if you so, guide me please.

 

[mramos1]

Do you have the schematic and software? That would help if I understand you are looking for help debugging a counter program?

 

[Hesam Kamalan]

thanks marmos1,
schematic and software is too much.

 

[Matt(Pic progger)]

Ok, so are you saying you can't find were the error is coming from? It can only be hardware or software.

Have you swapped the outputs from the encoders to see if the error (number of counts per decoder) also swaps? i.e. if enc1 normally give 99 and enc2 normally gives 100 then does swapping the outputs give enc1=100 and enc2=99? if so then I suspect a hardware problem.

It's a bit difficult to help, can you be a little more specific on your exact problem?