Machsupport Forum
Third party software and hardware support forums. => PoKeys => Topic started by: Cartierusm on January 09, 2017, 11:44:10 PM
-
I'm using a 57E Pokeys and an M16 BOB. For the limit switches I understand that Pokeys now supports limits being used for home limits as well. On the board there are X, Y, Z and A inputs for wiring the limits. Obviously daisy chain two together per axis.
But what I need to know is one wire goes to the pin for the axis, but where does the other wire go to the "GND" pin or the "5V' pin? Thanks.
-
GND
-
This didn't work. When I use the 5V it does.
-
yer it goes from limit pin to ground
-
When the limit switches, being NC, are not triggered does the Pokeys 57E board have red LEDs by the limit RJ45 Port? I ask because when I had GND hooked up to the limit switches common wires the LEDs were barely lit up. I mean hard to even see. When I use 5V they light up bright. When I push on a limit switch to simulate a trigger the LED turns off.
I'm not sure if this is normal or not, but I'm also having another weird problem. The E-Stop button is NC, normally closed, but I have to have the checkmark box for 'invert estop' check marked to have it work. It's totally backwards. I wonder if there's something wrong with my board.
-
PoKeys devices use active-low state for the inputs (all have pull-up resistors). So, switches and other sensors must be connected in such a way that they make a contact between the input and the GND.
-
I think the board I had was bad. I've since returned it.
The pull-up resistors, are they built into the pokeys or do I have to add them?
-
Weak pull-up resistors are already built-in. If longer wires are used to connect signals to PoKeys device, additional external pull-ups (1 kOhm) are suggested.
If internal pulse generator is used, there is a requirement for 470 Ohm pull-up resistors on step signal pins (see the manual on Pulse engine and Mach3).