shroffsp
Guest
S
Dear
I am trying to develop a DF1 master driver for SLC5/03 using c on linux. I donot have any experience in programming AB PLC. But I am an Instrumentation Engineer with a lot of experience in DCS.
I am referring the AB's DF1 protocol manual for the development.
I have been successful in reading the integer file location (N7:39).
What I have observed is I am getting a word as a result (respnose = 1247 Hex) of my reading. I am entering a value of 99.9 for this register from the PanelView ( The range specified for this tag is (4 to 100 in the Panel View)
What I want to know is -- does word result require scaling ? I have scanned the DF1 protocol manual. It is silent on this topic. If any scaling is required than, what is the scaling equation to be used?
Can any body provide me any links or code of DF1 driver or protocol anyalser with which I can verify my results?
I am trying to develop a DF1 master driver for SLC5/03 using c on linux. I donot have any experience in programming AB PLC. But I am an Instrumentation Engineer with a lot of experience in DCS.
I am referring the AB's DF1 protocol manual for the development.
I have been successful in reading the integer file location (N7:39).
What I have observed is I am getting a word as a result (respnose = 1247 Hex) of my reading. I am entering a value of 99.9 for this register from the PanelView ( The range specified for this tag is (4 to 100 in the Panel View)
What I want to know is -- does word result require scaling ? I have scanned the DF1 protocol manual. It is silent on this topic. If any scaling is required than, what is the scaling equation to be used?
Can any body provide me any links or code of DF1 driver or protocol anyalser with which I can verify my results?