| ??? 02/16/06 23:17 Read: times |
#110189 - 485 Responding to: ???'s previous message |
You didn't read the datasheet on how these MAX485's work did you? Such is learning the hard way. Firstly, RS485 (using one pair) is half duplex - only one unit can talk at a time - is this what you software expects? I normally would tie the DE and RE signals together and connect them to a port pin. Your software has to control this port pin -setting it high to transmit, low to receive. |
| Topic | Author | Date |
| SERIAL COMMUNICATION USING RS485 | 01/01/70 00:00 | |
| BI-DIRECTIONAL | 01/01/70 00:00 | |
| recommended reading | 01/01/70 00:00 | |
| 485 | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 | |
| The circuit that you need! | 01/01/70 00:00 | |
| and it sometimes work | 01/01/70 00:00 | |
| ...but fits in the Harshada´s needs | 01/01/70 00:00 | |
| but when you publish such | 01/01/70 00:00 | |
| my bad | 01/01/70 00:00 | |
| MAX3444E - the J1708 variation | 01/01/70 00:00 | |
You got mr there. | 01/01/70 00:00 | |
| Beat you to it, Erik | 01/01/70 00:00 | |
| ah, Andy | 01/01/70 00:00 |