Arduino Forum

Using Arduino => Sensors => Topic started by: krector on May 02, 2019, 10:58 pm

Title: Absolute Encoder Interfacing With RS422
Post by: krector on May 02, 2019, 10:58 pm
I have done a certain amount of research on interfacing to absolute encoders having RS422 interface and SSI protocol.  The encoder in question is a Stick ATM60.  The tech documents say Supply Voltage range = 10v ... 32v.  I would like to connect this to 24v.  I understand the need for an RS422 transmit/receive interface and code to handle the SSI protocol in the micro controller.  But, before I just hook this thing up and experiment, I'd like to know a little bit more.

I have not found any reference telling what voltage to expect on the CLk± and DATA± lines for this device or any other SSI RS422 device.

Can anyone explain what this voltage will be and how they reach their conclusion?