June-7th-2019, 11:01 PM
Hello Lukas,
I have maybe promising news for you.
In the current NPIX-RS485 circuitry we are using the RS-485 bus driver SN65ALS176D from Texas Instruments that needs the TX/RX mode switch makeing you a problem. From company MAXIM there is a pin compatible bus driver available named MAX13488E that does not need this mode switch. It features the AutoDirection control function that detects wether or not the BCM CPU is sending or not automatically.
We ordered some samples of this bus driver right now and will replace the SN type with MAX type as soon as we receive them and will perform some tests. If it passes in principle we need to redo the overall product tests and will then be changing the bill of material of NPIX-RS485 and will bring out a revision no.2.
I will keep you informed.
Armin
I have maybe promising news for you.
In the current NPIX-RS485 circuitry we are using the RS-485 bus driver SN65ALS176D from Texas Instruments that needs the TX/RX mode switch makeing you a problem. From company MAXIM there is a pin compatible bus driver available named MAX13488E that does not need this mode switch. It features the AutoDirection control function that detects wether or not the BCM CPU is sending or not automatically.
We ordered some samples of this bus driver right now and will replace the SN type with MAX type as soon as we receive them and will perform some tests. If it passes in principle we need to redo the overall product tests and will then be changing the bill of material of NPIX-RS485 and will bring out a revision no.2.
I will keep you informed.
Armin
„You never fail until you stop trying.“, Albert Einstein (1879 - 1955)