Help with writing data

[chunt79]

Hello everyone. My question is about moving data into selective bits in Controllogix. I want to move a hex value into the last word(bits 16-31) of a mapped devicenet field. The first 16 bits (0-15) are being used to control the state of a UV lamp power supply and the last 16 bits (16-31) are being used to control the power level of the lamp. Any help or direction would be great. Thanks

 

[chunt79]

Got It

I am inputing everything in binary then using a mov to send it to the power unit

 

[toont]

You can use the Bit Distribute instruction to copy desired bits (the hex value) to bits 16-31 in the destination Word.

 

[Ken Roach]

I usually use MUL or DIV by powers of 2 to move bits around, instead of Bit Distribute or Bit Shift instructions. Then I use Masked Move (MVM) to put the data into the target data element.

But that just proves there are multiple ways to do things, even within the same operating system !