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CS-Lab CSMIO/IP-A

CS-Lab CSMIO/IP-A
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4.13.3 Limit switches and E-STOP signal.
The easiest option ensuring a necessary safety is to use two (2) switches, both sides of an axis. In this
case one switch works only as safety LIMIT signal and the other has double function: LIMIT and HOMING.
In our example of three axis plotter, we are homing the X and Y axes on the negative side (towards de-
creasing coordinates), so the double function will be performed by LIMIT-- switches. And we are homing Z
axis upward and up move usually, on CNC machines is a movement in the positive direction. So for Z axis
the double function will be performed by LIMIT++ switch.
CSMIO/IP-A signal
PIN number on
CSMIO/IP-A connector
Function
Mach3 Port
(Port&Pins)
Mach3 Pin
(Port&Pins)
Input 3(+)
4
X LIMIT--
(X HOME)
10
3
Input 4(+)
5
X LIMIT++
10
4
Input 5(+)
6
Y LIMIT--
(Y HOME)
10
5
Input 6(+)
7
Y LIMIT ++
10
6
Input 7(+)
8
Z LIMIT--
10
7
Input 8(+)
9
Z LIMIT++
(Z HOME)
10
8
Input 9(+)
10
E-STOP
10
9
Input 3-9(-)
17-23
‘-potential for inputs: 3-9
Optical inputs in CSMIO/IP-A require both ‘+’ and ‘-‘ potentials connection. The ‘-‘ Pins of digital inputs
used are connected to 0V potential - see "Power supply" section.
CS- Lab s.c. CSMIO/IP- A - CNC controller
Page 37

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