Usually my recommendation on the Enable/Brake is to jumper them together and run them to pin 14 of the DB25 on the interface, use pin14 as a drive enable then, lo is enabled. But per your diagram you need to add a wire to pin 1 of the picstep to pin1 of the associated axis connector.
Yes you should be able to use the 5V on the interface to run the PICstep logic. However, it does depend on the wiring. Don't route the 5V wires next to motor wiring.
Make sure you use a star ground wiring scheme.
Estop- two simple single pole normally open switches. The contacts of one wire to X6, when you press the switch is sets a latch. Wire a second switchs contacts to X7, that is a reset switch. So you hit one to set and latch, the reset when you want to unlatch.
At this point that doesn't do anything except illuminate or turn off LED7. Pads J and L are the outputs of the latch circuit. The are the opposite of each other signal wise. i.e. one will be 4+VDC when the other is near 0VDC, and in the other state they are opposite. Depending on what you want to do, you can wire either pad to pin16 of the db25 for example for the computer to see. You can wire one to a small 5V relay in your chassis to shut things down, or break the enable signal to all the motor drives...
It's quite flexable, which makes it more complicated.......
Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
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