Sign in to follow this  
Followers 0
skyfox

DLO-6 Analog Scaling (0-4095 to -10 to +10 EU)

4 posts in this topic

Hello All, Trying to figure out how to scale 0-4095 Analog input to a -10 To +10 Instrument range. PLC (DL-06) that I am using does not have the ibox capability (ie. Old firmware). I need atleast 1 decmal place of resolution. Looking thru the AD manual confused me even more. On Chapter 3: FO-04AD-1 4-Ch. Analog Curent input DL05/06 Option Module user Manual; 7Th ED., 5/07 Page 3-11 shows the incoming analog value scaling as; A = H - L / 65535 + L Confused as to how they got "65535" here. Shouldn't this be 4095??? Nevertheless I am at a loss on how to do this conversion/Scaling to be in -10 to +10 Engineering units. Any help would be greatly appreciated. Thanks to All. Edited by skyfox

Share this post


Link to post
Share on other sites
Ok I got it sorted out. My analog input was in BCD and not in binary. Drove me crazy for a while as this a simple task on most other PLC's. Any how I would still like to now if the manual was in error regarding the "65535" value in my post above. Thanks Again.

Share this post


Link to post
Share on other sites
Yes - the manual for that unit does appear to be a bit mixed up. It shows the conversion you cite but is only applicable to a 16 bit input. (The 8 channel version does have 16 bit resolution. I wonder if it was a bad cut-down of that manual?) They show the data format in binary but not in BCD. I think you figured it out though.

Share this post


Link to post
Share on other sites
Thanks Bernie, It threw me for a loop. Regards-

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0