Mesa doubt

Hello,

I have to buy a FPGA card to my system. I work with digital 3 servo´s ( step direction) and 3 digital linear encoders. Actually working with the paralell port i have linked the 3 servos and 1 linear encoder, because i have no more digital inputs in my paralell port to link more linear encoders.

My doubt is if i can manage my hole system with a Mesa 5i25 + 7i76 , i know that the daughter card just have one input for one encoder, for the spindle, but i don´t know if is it referred to a analogue input for encoders. Now im reading pulses from one linear encoder with two digital inputs from the paralell port, so i don´t know if i will be able to read pulses from the digital linear encoder with the digital inputs of the 7i76 daughter card.

Anyone knows??

Sorry for my english.

Thank you and regards.

For step/dir with encoder feedback a 5I25 + 7I85S might be a better solution.
this will give you 4 channels of step/dir outputs, 4 encoder inputs and one serial expansion port.

If you need 24V I/O for limit switches etc, you could use a 7I84 to provide that I/O (the 7I84 connects to the 7I85S serial expansion port). The 7I84 provides 32x 12V or 24V inputs and 16x 12V or 24V outputs.

Thank for answer,

The lineal encoder im using has 2 digital outputs. One for A phase and other one for B phase. When you say 4 encoder inputs do you mean 8 total inputs ( for manage 4 linear encoders with two phases) or 4 total inputs ( for manage 2 linear encoders with two phases) ??

Regards.

4 encoder inputs means 4 full encoder
inputs including index
(12 inputs, A,B,Z X4)
These inputs can be single ended or differential

Ok, thats good neews. Thanks for answer.

Could i use the 5i25 + 7i85S + paralell port (for limit switches etc)

Regards.

Yes, that should be fine