National Instruments MCA-7724 Figure 5 showsthe pin assignments for connector A.

MCA-7724Motion Axis Router 6 ni.com
Figure 5 showsthe pin assignments for connector A.
Figure5. 68-Pin Connector A Pin Assignments
AnalogReference (Output)
NC
AnalogInput 1
AnalogOutput Ground
NC
AnalogOutput 1
DigitalGround
NC
Breakpoint1
DigitalGround
NC
NC
NC
DigitalGround
DigitalGround
NC
NC
NC
NC
DigitalGround
DigitalGround
NC
Axis2 Inhibit
Trigger2
Axis2 Home Switch
DigitalGround
DigitalGround
Axis2 Dir (CCW)
Axis1 Inhibit
Trigger1
Axis1 Home Switch
DigitalGround
DigitalGround
Axis1 Dir (CCW)
AnalogInput Ground
AnalogInput 2
Reserved
AnalogOutput 2
Shutdown
NC
Breakpoint2
NC
NC
Host+5 V
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Axis2 Reverse Limit Switch
Axis2 Forward Limit Switch
Axis2 Encoder Index
Axis2 Encoder Phase B
Axis2 Encoder Phase A
Axis2 Step (CW)
Axis1 Reverse Limit Switch
Axis1 Forward Limit Switch
Axis1 Encoder Index
Axis1 Encoder Phase B
Axis1 Encoder Phase A
Axis1 Step (CW)
135
236
337
438
539
640
741
842
943
10 44
11 45
12 46
13 47
14 48
15 49
16 50
17 51
18 52
19 53
20 54
21 55
22 56
23 57
24 58
25 59
26 60
27 61
28 62
29 63
30 64
31 65
32 66
33 67
34 68