RS485 half duplex and full duplex question

With an oscilloscope and a "reference" device that you can set up to send and receive data.

-- Grant Edwards grante Yow! Yes, but will I at see the EASTER BUNNY in visi.com skintight leather at an IRON MAIDEN concert?

regards:

excuse me ,what is the "reference" device? could someone excellent to explain more detail?

any positive suggestion is welcome. best regards to you all

mike-smith

regards:

excuse me ,what is the "reference" device? could someone excellent to explain more detail? ^.^

any positive suggestion is welcome. best regards to you all

mike-smith

A device with an RS485 or RS422 interface that you know works.

You write rather English rather oddly for somebody named Mike Smith...

Buy a converter for your PC. Like B&B Electronics.

regards:

If my system is like the followings: the system architecture is:

then do I need any control signal to control the "TX" "RX"?

any positive suggestion is welcome. best regards to you all

mike

That will work fine. Connect TX enable and RX enable to the appropriate levels so they are permanently enabled.