Sal
Guest
S
I am building an elevator system of four level demo as a project for my school where I'm using an AB PLC5/20 and an encoder for positioning.
The encoder is OakGrigsby optical encoder 900 series with 128 ppr, quadrature outputs and is completely compatible with TTL circuits, it got 4 pins where two pins are for the 5VDC (+ and -) and the other two are the output channels (A and B), and the type of card I'm using to read out these pulses is AB 1771-IJ encoder/counter module, but it seems hard for me to figure how to interface between that encoder and this card to do the job and if so where to read these outputed pulses from what register or file of the PLC, I am new to this stuff, any idea is appreciated.
The encoder is OakGrigsby optical encoder 900 series with 128 ppr, quadrature outputs and is completely compatible with TTL circuits, it got 4 pins where two pins are for the 5VDC (+ and -) and the other two are the output channels (A and B), and the type of card I'm using to read out these pulses is AB 1771-IJ encoder/counter module, but it seems hard for me to figure how to interface between that encoder and this card to do the job and if so where to read these outputed pulses from what register or file of the PLC, I am new to this stuff, any idea is appreciated.