The Axis plug-in interfaces are used to add additional functions to the main signal
generator board. For example, a stepper drive plug-in card or cable will enable
you to drive a stepper motor directly from the signal generator box.
Each of these plug-in cards is a SKT10X2 connector, with the
pin configuration on the left. Pin numbers 1-5, 7, 13, 15 and
17-20 perform the same function on each jumper.
Per the chart below, pins 6, 8-12, 14 and 16 have different
values of Status, Fault, InputA, Dir, InputB, Step, SCOM and
CS respectively for each plug-in card.