Analog Input Addressing

[Chris Elston 78]

Ok so this is my first Automation Direct PLC, it's been quite fun learning about the DL205 family and how to use the "accumulator", quite different thinking required. I am using a DL240…(dang it, I latter learned that I should have gotten a DL250 so I could do “Bit for Word” addressing…which would have been NICE…) I've gotten the hang of most of the addressing etc. I can't find anything in the manuals about how the analog card is addressed. I am using a F2-08AD-2 8 input volts 0-10 analog card. I've seen other people’s example code on using an analog card, and it looks like they load "LD a V2000" register to get the analog value from the card. Where is this information found that says, if you want to access channel 1 in your analog card that it's stored into V2000? My analog card is in slot 7. Does that matter? I thought I should address the channels: X60 = channel 1 X61 = channel 2 Etc…. X67 = channel 8 Maybe that doesn’t matter either…? Do all analog cards take up the V2000 registers double word? Like channel 1 = V2000 double word channel 2 = V2002 double word channel 3 = V2004 double word I don't understand the relationship of how the analog card that resides in a slot in the rack is mapped over to the V2000 registers. Do I need to map this somewhere in a setup? Or is it like that and there is some chart I am not seeing that tells me that analog signals can be found in the V registers. I have learned that some special V registers can be accessed by looking at other people’s code, like input cards I think have special registers like V4040 or something like that. Any help on how analog addresses are mapped to registers or where I would find a chart on these special access registers would be appreciated. BTW, I'll post my code when done.

[Chris Elston 78]

I found my answer. It seems the analog card have a nice manual at automation direct website. Attached it the manual to my card. I think I get it now. It seems there are dedicated address locations depended on slot location that then can be mapped to a user regisister such as a V2000. *sigh*... ch5.pdf

[GerryM 2]

dang, I was too late! You answered your own question. I was just programming in Chapter 5 the other Day. Anyway, Glad you figured it out. And, Happy Birthday!!!!