MachMotion IO6 V4.0 Manual page 15

The example drawings have terminals with representative labels. The top row of
terminals above the opto-isolated input terminals on the Primary Terminal Block has
three terminals labeled GND and three terminals labeled +24 Volts. These labels
correspond to the example drawings and are provided as voltage sources for the
opto-isolated inputs.
The example drawings in the Opto-Input Connection Guide show the middle row of
terminals in the Primary Terminal Block labeled as X-XX. These connections in the
guide correspond to terminals labeled 1-11, 1-12 etc.
The example drawings show the lower level of terminals labeled X-XXL. These
terminals are located at the circuit board level and are labeled 1-10L, 1-11L, 2-10L on
the Primary Terminal Block.
For example, in the first diagram for wiring up a 24V limit switch, one side of the switch
is connected to 24V on the Primary Terminal Block and the other side of the switch is
connected to an input X-XX. As stated above this could be 1-11, 1-12, 1-13, 1-15,
2-10, and 2-11. Remember that Mach3 must be configured accordingly. Note that the
input X-XXL is not used in this example. Also the jumper for the input must be
connected to GND, not to 5V.
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