| ??? 09/15/05 21:33 Modified: 09/15/05 21:41 Read: times |
#101147 - I'm sure Responding to: ???'s previous message |
I do not have a copy of the Standard, But
MAXIUM shows RS422 as unidirectional 1 TX to upto 10 RX with no transmitter disable. You can have only 1 transmitter per line. To me this means 1 to 1 if you want 2 way communication. B&B electronics shows RS485 with 2 or 4 wires. It may not be to the standard. I only know what I read on the Internet. As I said (with other words): "if someone want to call a potato a tomato (in a posting on the internet), that does not make it a tomato" quoting http://www.interfacebus.com/Design_Co...RS422.html EIA-485 specifies bidirectional, half-duplex data transmission. I quote the above which corresponds to all quotes from the standard I have seen. Erik |
| Topic | Author | Date |
| communication between multiple 89C51's | 01/01/70 00:00 | |
| Links | 01/01/70 00:00 | |
| no "learning" there | 01/01/70 00:00 | |
| Multiprocessor? | 01/01/70 00:00 | |
| multiprocessor communication | 01/01/70 00:00 | |
| That is correct. | 01/01/70 00:00 | |
| 8051 MCU book by Kenneth J. Ayala got it | 01/01/70 00:00 | |
| multiprocessor communication | 01/01/70 00:00 | |
| There is no standard. | 01/01/70 00:00 | |
| Re: There is no standard. | 01/01/70 00:00 | |
| I think Neil is talking 422 and Ijaz is | 01/01/70 00:00 | |
| No, But | 01/01/70 00:00 | |
| There is no such thing | 01/01/70 00:00 | |
| You Sure? | 01/01/70 00:00 | |
| Multi Processor communication | 01/01/70 00:00 | |
| what does micro have to do with this??? | 01/01/70 00:00 | |
I'm sure | 01/01/70 00:00 |