| ??? 09/22/05 09:15 Read: times |
#101355 - Check out the FTDI serial chip Responding to: ???'s previous message |
Bert, The FTDI FT232 USB-> serial chip has a handy feature in that it has an output that can be used to control a RS485 driver - no software needed. I've used these devices with great success. The 75176 (max485 etc...) connect directly to the chip - instant USB->485 converter. As for actual delay times for bus turnaround, I find it is the code that takes time to process the incoming packet and send a response that creates the delay - especially if it has a CRC attached. As long as your 485 bus is biased to the idle state with no drive, then you should have little problem. |
| Topic | Author | Date |
| Delay times for switching RS485 lines? | 01/01/70 00:00 | |
| MODBUS | 01/01/70 00:00 | |
| Driver enable and disable time | 01/01/70 00:00 | |
| caution | 01/01/70 00:00 | |
| delay time | 01/01/70 00:00 | |
| make a master | 01/01/70 00:00 | |
| I don't think it is the problem | 01/01/70 00:00 | |
| not the PC, not the windows | 01/01/70 00:00 | |
| Thank you all | 01/01/70 00:00 | |
| non-pc master | 01/01/70 00:00 | |
| Check out the FTDI serial chip | 01/01/70 00:00 | |
| CRC? | 01/01/70 00:00 | |
| CRC? | 01/01/70 00:00 | |
I see | 01/01/70 00:00 | |
| Another happy FTDI user | 01/01/70 00:00 | |
| USB as mentioned below sounds good, but | 01/01/70 00:00 |