Decimal to Hex

[whtrader 0]

Hi all, I need advice on this issue I am having. How do you convert D100 - &150 to D101 - #150. If I used convert the &150 will be #96. Is there a trick to achieve this? Pls advice. Thanks.

[chainsaw 0]

The BCD instruction is what you need

[PdL 71]

There's no instruction that converts &150 to #150 because the equivalent values are not equal.

[Automation 1]

These sure one of wanting to introduce a value in decimal to the PLC? The natural thing is to put it in BCD. He works and it visualizes in BCD as if you made it in decimal.

[whtrader 0]

Thanks for the reply. Actually I am doing a floating point multiply for example 10.90 * 100 = 109.0. Then I do a FIX on 109.0 thus getting +109. I want to use this value as a set point for my pulse counter which is in # format. I tried converting &109 to hex which is #69. Thus the count is incorrect. Thinking back is it possible to convert the counter value to floating and do a compare from there. Pls advice. Thanks.

[PdL 71]

Use the increment/decrement instructions to make a counter yourselves which can handle decimal values. I don't see any other method easily.

[gtsuport 61]

At this point we do not know what hardware you are working with. What processor do you have?

[whtrader 0]

I am not sure how this work. I was planning to read the counter value in CT21. Edited 14 Oct 2008 by whtrader

[gtsuport 61]

Unless I have missed something, I think you may be getting your display formats confused. The FIX instruction result is a signed binary value. It appears to me that counter value on the CT021 is also signed binary. The processor is dealing with binary (or hex, same thing) values. What were you planning to do with the value you read from the CS1W-CT021?

[whtrader 0]

I was planning to use the result of the multiply for example 10.90 * 100 = 109.0 to compare with the value read from CS1W-CT021. I have used CPM1A and believe the counter value is in hex format. Pls advice. Thanks.

[gtsuport 61]

I would suggest that you read the W902 (CS1W-CT021) manual. The CS1 is a completely different system than a CPM1A.