Hardware Manual
–
CNC310
Page | 20
In the software it must be indicated whether a switch is either Normal-Open (NO) or Normal-Closed
(NC). This is set via ‘Homing and E
-
Stop’ part of the se
tup screen. A message will appear onscreen to
show that an E-STOP condition has occurred.
6.3
HOME1 input
The HOME1 input is used for connecting the X, Y and Z home switches for the machine so it knows
where it is.
The figure below shows how the input circuit is designed.
Figure 16. Home1 input circuit.
This image shows that on the input a 10k resistor is used as a pull-up. This means that IF you would
measure on this input you will measure 5V. Please note, that this is not the
‘real’ 5V but just a pull
-
upped value. This input is used for the X, Y and Z axis. Depending on the type of switch, Normal
Open or Normal Closed, the switched need to be connected differently.
Figure 17. Connecting Normal-Closed home switches in series.
Please note, by default the E-STOP input is disabled.
