ADLINK PCI-8164 - Manual (Page 60)

48 Signal Connections
3.5 Ramping-down and PCS
There is a SD/PCS signal for each of the 4 axes. The signal
names, pin numbers, and axis numbers are shown in the table
below.
A circuit diagram is shown below. Typically, the limit switch is used
to generate a slow-down signal to drive motors operating at slower
speeds. For more details on SD/PCS operation, refer to section
4.3.1.
CN2 Pin No Signal Name Axis #
40 SD1/PCS1 1
46 SD2/PCS2 2
90 SD3/PCS3 3
96 SD4/PCS4 4