| ??? 02/17/06 13:41 Read: times |
#110233 - Erik and Jan is it feasible. Responding to: ???'s previous message |
c Russell Bull said: Unless you are expecting to manufacture significant numbers of these items, just using'off the shelf' PLCs will solve your problem in short order. quote] Thanks for alternative, But I need alternative with in the scope of 8051's scope, I was mainly asking the question about the Pulse counting. I am re -asking, Whether there are some other options / alternative for counting the variable pulse signals on each terminals(+200 terminals) which bring some ease and can able to send data using Rs485. Because i have intention to use 1 of the pin of MCU for external interrupt. Then other 8 pins are connected with other signal, which rises now and then, Then the data will be send to Master. Is any betteralternative in the scope of MCU.Suppose can i use the some othr counter or such sort of component rather than using the MCU AT89c2051. Erik and Jan kindly give me favour you people too. I will care about Appnote to make the rs485 bullet proof... much Esteem, Moizi |
| Topic | Author | Date |
| +24 volt DC pulse counting with 8 signal | 01/01/70 00:00 | |
| you shouldn't daisy-chain RS485 | 01/01/70 00:00 | |
| WHY | 01/01/70 00:00 | |
| sorry, me stupid | 01/01/70 00:00 | |
| if you get the details right it certainl | 01/01/70 00:00 | |
| Daisy Chain | 01/01/70 00:00 | |
| The only REAL way to connect RS485 is de | 01/01/70 00:00 | |
| What you need is a PLC | 01/01/70 00:00 | |
| Erik and Jan is it feasible. | 01/01/70 00:00 | |
| already answered: | 01/01/70 00:00 | |
| for pulses counting | 01/01/70 00:00 | |
| Pulse input | 01/01/70 00:00 | |
| +24 pulse through optocoupler | 01/01/70 00:00 | |
| Schmidt and isolate | 01/01/70 00:00 | |
| 4N35 are being used | 01/01/70 00:00 | |
| I know of none such, but follow the opto | 01/01/70 00:00 | |
| 14 is not clear to me | 01/01/70 00:00 | |
| if the links worked I'd have a look | 01/01/70 00:00 | |
| links fixed | 01/01/70 00:00 | |
| 6 pin schmidt Trigger opto/ isolator | 01/01/70 00:00 | |
seems like good choices | 01/01/70 00:00 |