E-STOP, LIMIT AND HOME SWITCH WIRING TO CNC BOARD INPUTS.
Although this was draw for the System4 interface this configuration applies to all our interface boards. No extra components required as all boards have built in pull-ups. Uniport board will need inputs 4 & 5 reconfiguring.
The limit switches are wired in series using the Common (C) and the NC (normal closed) connections. Operation of any or more switches will change the logic level on the board inputs which can be detected by software to disable motion. The home switches need separate inputs for each axis as the are checked sequentially by the software.