| ??? 09/11/07 14:15 Read: times |
#144378 - Unlilely Responding to: ???'s previous message |
Gerd Field said:
I want to use the 51, like the plc. As Jan said, if it is feasible to do it - whatever "it" may be - on an 8051 then an RTOS is almost certainly not needed. http://www.8052.com/forumchat/read.phtml?id=144363 So I can use the bit dispsoal function to actualize logic control, but the timer not be actualized. Absolutely no reason why you should need an RTOS for that. the plc is rtos equipment Maybe some commercial PLCs do, indeed, use an RTOS - but that doesn't mean that you need to! Quite probably, commercial PLCs that do use an RTOS are significantly more complex than just something simple on an 8051! Could you tell me how to make the 51 like the plc? Now, that is a far more fundamental question that you need to address long before you start thinking about RTOS and such! In what way do you want it to be "like" a PLC? Do you mean a general-purpose controller that can be programmed and reprogrammed by the user as required? Or do you just want to make a custom control board for a specific task? http://www.what-is-net.info/what-is-a...r-plc.html http://en.wikipedia.org/wiki/Prog...controller |
