i work in both the electronic field and software.. when it comes to PLC's, i use them i write latter code and timer code etc... what i would like to know is this. the instruction set for a typical PLC ,LDA, LB, LBR etc... when the PLC is getting a program load from the laptop what is actually going on here? does the software in the laptop actually compiling it down to a native CPU language and then sending like a BIN file? or does the PLC actually read the instructions in its scripted form in text base for example and then scan them as they are executed ? or maybe convert them into like a P-code once in the pcl? now, i would think compiling the code down to its native form would be the best how ever, this would then force an update to software each time lets say A&B decides to use a more advanced CPU with a different set in it. anyways i would like some comments on this.
- posted
18 years ago
-- Real Programmers Do things like this. http://webpages.charter.net/jamie_5