National Instruments Network Router MCA 7724 User Manual

USER GUIDE  
MCA-7724 MOTION AXIS ROUTER  
Introduction  
The MCA-7724 Motion Axis Router reroutes the signals from your motion  
controller into separate connectors that connect to different motion  
accessories. The router allows you to connect one, two, three, and four axis  
drives and accessories to a controller.  
Features  
The MCA-7724 Motion Axis Router has five 68-pin VHDCI connectors:  
the controller connector, connector A, connector B, connector C, and  
connector D. Figure 1 shows the five connectors.  
CONTROLLER CONNECTOR  
MOTION I/O  
Front  
ACCESSORY CONNECTORS  
<
2 + 2  
>
CONNECTOR A  
CONNECTOR B  
<
3 + 1  
>
CONNECTOR C  
CONNECTOR D  
Back  
Figure 1. MCA-7724 Motion Axis Router Connectors  
National Instrumentsand ni.comare trademarks of National Instruments Corporation. Product and company names mentioned herein are  
trademarks or trade names of their respective companies.  
322835A-01  
Copyright © 2001 National Instruments Corp. All rights reserved.  
April 2001  
 
3 + 1 Connectivity Option  
Controller axes 1, 2, and 3 correspond to axes 1, 2, and 3 on connector C,  
and controller axis 4 corresponds to axis 1 on connector D, as shown in  
Figure 3.  
Axis 1 Signals  
Axis 2 Signals  
Axis 3 Signals  
Shared Signals  
Signals  
Signals  
Controller  
Connector  
1
Axis  
Axis 1 Signals  
Axis 2 Signals  
Axis 3 Signals  
Shared Signals  
Axis 4 Signals  
2
Axis  
Signals  
3
Connector  
C
Axis  
Connector  
D
Shared  
Signals  
Shared Signals  
Axis 1 Signals  
Figure 3. 3 + 1 Connectivity Option  
Axis Signals  
The per axis and shared signals from the controller are listed below.  
Note A line above the signal name indicates that the signal is active-low.  
Per Axis Signals from the Controller  
Step (CW)  
Dir (CCW)  
Encoder Phase A  
Encoder Phase B  
Encoder Index  
Forward Limit Switch  
Reverse Limit Switch  
Home Switch  
Trigger  
Breakpoint  
Inhibit  
Analog Output  
Analog Input  
© National Instruments Corporation  
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MCA-7724 Motion Axis Router  
 
Shared Signals from the Controller  
Host +5V  
Digital Ground  
Analog Input Ground  
Analog Output Ground  
Analog Reference (Output)  
Shutdown  
Note Some signals may not be available on your controller. Please consult your controller  
user manual for signal connection information.  
Caution Shared signals are available at all four accessory connectors. Use caution to avoid  
double driving input signal shutdown.  
Software Configuration  
Because of signal rerouting, the axis number on your accessory may not  
match the programmed axis in your software. With the 2 + 2 connectivity  
option, the accessory connected to connector B will refer to the axes as  
axis 1 and axis 2, but will be programmed as axis 3 and axis 4, respectively,  
in your software. With the 3 + 1 connectivity option, the accessory  
connected to connector D will refer to the axis as axis 1 but will be  
programmed as axis 4 in your software.  
MCA-7724 Motion Axis Router  
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Connecting Your Adapter  
This section provides the pin assignments for each of the MCA-7724  
connectors.  
Figure 4 shows the pin assignments for the controller connector.  
1
2
3
4
5
6
7
8
9
35  
36  
37  
38  
39  
40  
41  
42  
43  
Axis 1 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 1 Home Switch  
Trigger 1  
Axis 1 Step (CW)  
Axis 1 Encoder Phase A  
Axis 1 Encoder Phase B  
Axis 1 Encoder Index  
Axis 1 Forward Limit Switch  
Axis 1 Reverse Limit Switch  
Axis 2 Step (CW)  
Axis 1 Inhibit  
Axis 2 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 2 Home Switch  
Axis 2 Encoder Phase A  
Axis 2 Encoder Phase B  
Axis 2 Encoder Index  
10 44  
Trigger 2 11 45  
Axis 2 Forward Limit Switch  
Axis 2 Reverse Limit Switch  
Axis 3 Step (CW)  
Axis 2 Inhibit  
12 46  
13 47  
14 48  
Axis 3 Dir (CCW)  
Digital Ground  
Axis 3 Encoder Phase A  
Axis 3 Encoder Phase B  
Axis 3 Encoder Index  
Digital Ground 15 49  
16 50  
17 51  
18 52  
19 53  
20 54  
Axis 3 Home Switch  
Trigger 3  
Axis 3 Forward Limit Switch  
Axis 3 Inhibit  
Axis 3 Reverse Limit Switch  
Axis 4 Dir (CCW)  
Digital Ground  
Axis 4 Step (CW)  
Axis 4 Encoder Phase A  
Digital Ground 21 55  
Axis 4 Home Switch 22 56  
Trigger 4 23 57  
Axis 4 Encoder Phase B  
Axis 4 Encoder Index  
Axis 4 Forward Limit Switch  
Axis 4 Reverse Limit Switch  
Host +5 V  
Axis 4 Inhibit  
24 58  
25 59  
Digital Ground  
Breakpoint 1 26 60  
Breakpoint 3  
Digital Ground 28 62  
Analog Output 1  
Analog Output 3 30 64  
Breakpoint 2  
27 61  
Breakpoint 4  
Shutdown  
29 63  
Analog Output 2  
Analog Output 4  
Reserved  
Analog Output Ground  
31 65  
Analog Input 1 32 66  
Analog Input 2  
Analog Input 3 33 67  
Analog Input 4  
Analog Reference (Output) 34 68  
Analog Input Ground  
Figure 4. 68-Pin Controller Connector Pin Assignments  
© National Instruments Corporation  
5
MCA-7724 Motion Axis Router  
 
Figure 5 shows the pin assignments for connector A.  
1
2
3
4
5
6
7
8
9
35  
36  
37  
38  
39  
40  
41  
42  
43  
Axis 1 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 1 Home Switch  
Trigger 1  
Axis 1 Step (CW)  
Axis 1 Encoder Phase A  
Axis 1 Encoder Phase B  
Axis 1 Encoder Index  
Axis 1 Forward Limit Switch  
Axis 1 Reverse Limit Switch  
Axis 2 Step (CW)  
Axis 2 Encoder Phase A  
Axis 2 Encoder Phase B  
Axis 2 Encoder Index  
Axis 2 Forward Limit Switch  
Axis 2 Reverse Limit Switch  
NC  
Axis 1 Inhibit  
Axis 2 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 2 Home Switch  
10 44  
Trigger 2 11 45  
Axis 2 Inhibit  
12 46  
13 47  
14 48  
NC  
NC  
Digital Ground  
Digital Ground 15 49  
NC  
16 50  
17 51  
18 52  
19 53  
20 54  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
Digital Ground  
Digital Ground 21 55  
NC 22 56  
NC  
NC  
NC 23 57  
NC  
NC  
24 58  
25 59  
NC  
Digital Ground  
Host +5 V  
Breakpoint 2  
NC  
Breakpoint 1 26 60  
NC  
Digital Ground 28 62  
Analog Output 1  
NC 30 64  
27 61  
Shutdown  
Analog Output 2  
NC  
29 63  
Analog Output Ground  
31 65  
Analog Input 1 32 66  
Reserved  
Analog Input 2  
NC  
NC 33 67  
Analog Reference (Output) 34 68  
Analog Input Ground  
Figure 5. 68-Pin Connector A Pin Assignments  
MCA-7724 Motion Axis Router  
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ni.com  
 
Figure 6 shows the pin assignments for connector B.  
1
2
3
4
5
6
7
8
9
35  
36  
37  
38  
39  
40  
41  
42  
43  
Axis 3 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 3 Home Switch  
Trigger 3  
Axis 3 Step (CW)  
Axis 3 Encoder Phase A  
Axis 3 Encoder Phase B  
Axis 3 Encoder Index  
Axis 3 Forward Limit Switch  
Axis 3 Reverse Limit Switch  
Axis 4 Step (CW)  
Axis 4 Encoder Phase A  
Axis 4 Encoder Phase B  
Axis 4 Encoder Index  
Axis 4 Forward Limit Switch  
Axis 4 Reverse Limit Switch  
NC  
Axis 3 Inhibit  
Axis 4 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 4 Home Switch  
10 44  
Trigger 4 11 45  
Axis 4 Inhibit  
12 46  
13 47  
14 48  
NC  
NC  
Digital Ground  
Digital Ground 15 49  
NC  
16 50  
17 51  
18 52  
19 53  
20 54  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
Digital Ground  
Digital Ground 21 55  
NC 22 56  
NC  
NC  
NC 23 57  
NC  
NC  
24 58  
25 59  
NC  
Digital Ground  
Host +5 V  
Breakpoint 4  
NC  
Breakpoint 3 26 60  
NC  
Digital Ground 28 62  
Analog Output 3  
NC 30 64  
27 61  
Shutdown  
Analog Output 4  
NC  
29 63  
Analog Output Ground  
31 65  
Reserved  
Analog Input 4  
NC  
Analog Input 3 32 66  
NC 33 67  
Analog Reference (Output) 34 68  
Analog Input Ground  
Figure 6. 68-Pin Connector B Pin Assignments  
© National Instruments Corporation  
7
MCA-7724 Motion Axis Router  
 
Figure 7 shows the pin assignments for connector C.  
1
2
3
4
5
6
7
8
9
35  
36  
37  
38  
39  
40  
41  
42  
43  
Axis 1 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 1 Home Switch  
Trigger 1  
Axis 1 Step (CW)  
Axis 1 Encoder Phase A  
Axis 1 Encoder Phase B  
Axis 1 Encoder Index  
Axis 1 Forward Limit Switch  
Axis 1 Reverse Limit Switch  
Axis 2 Step (CW)  
Axis 1 Inhibit  
Axis 2 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 2 Home Switch  
Axis 2 Encoder Phase A  
Axis 2 Encoder Phase B  
Axis 2 Encoder Index  
10 44  
Trigger 2 11 45  
Axis 2 Forward Limit Switch  
Axis 2 Reverse Limit Switch  
Axis 3 Step (CW)  
Axis 2 Inhibit  
12 46  
13 47  
14 48  
Axis 3 Dir (CCW)  
Digital Ground  
Axis 3 Encoder Phase A  
Axis 3 Encoder Phase B  
Axis 3 Encoder Index  
Digital Ground 15 49  
16 50  
17 51  
18 52  
19 53  
20 54  
Axis 3 Home Switch  
Trigger 3  
Axis 3 Forward Limit Switch  
Axis 3 Inhibit  
NC  
Axis 3 Reverse Limit Switch  
NC  
NC  
Digital Ground  
Digital Ground 21 55  
NC 22 56  
NC  
NC  
NC 23 57  
NC  
NC  
24 58  
25 59  
NC  
Digital Ground  
Host +5 V  
Breakpoint 2  
NC  
Breakpoint 1 26 60  
Breakpoint 3  
Digital Ground 28 62  
Analog Output 1  
Analog Output 3 30 64  
27 61  
Shutdown  
Analog Output 2  
NC  
29 63  
Analog Output Ground  
31 65  
Analog Input 1 32 66  
Reserved  
Analog Input 2  
NC  
Analog Input 3 33 67  
Analog Reference (Output) 34 68  
Analog Input Ground  
Figure 7. 68-Pin Connector C Pin Assignments  
MCA-7724 Motion Axis Router  
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ni.com  
 
Figure 8 shows the pin assignments for connector D.  
1
2
3
4
5
6
7
8
9
35  
36  
37  
38  
39  
40  
41  
42  
43  
Axis 4 Dir (CCW)  
Digital Ground  
Digital Ground  
Axis 4 Home Switch  
Trigger 4  
Axis 4 Step (CW)  
Axis 4 Encoder Phase A  
Axis 4 Encoder Phase B  
Axis 4 Encoder Index  
Axis 4 Forward Limit Switch  
Axis 4 Inhibit  
NC  
Axis 4 Reverse Limit Switch  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
Digital Ground  
Digital Ground  
NC  
10 44  
NC 11 45  
NC  
12 46  
13 47  
14 48  
NC  
Digital Ground  
Digital Ground 15 49  
16 50  
17 51  
18 52  
19 53  
20 54  
NC  
NC  
NC  
NC  
NC  
NC  
NC  
Digital Ground  
Digital Ground 21 55  
NC 22 56  
NC  
NC  
NC 23 57  
NC  
NC  
24 58  
25 59  
NC  
Digital Ground  
Host +5 V  
Breakpoint 4 26 60  
NC  
Digital Ground 28 62  
Analog Output 4  
NC 30 64  
NC  
27 61  
NC  
Shutdown  
29 63  
NC  
NC  
Analog Output Ground  
31 65  
Analog Input 4 32 66  
Reserved  
NC  
NC 33 67  
NC  
Analog Reference (Output) 34 68  
Analog Input Ground  
Figure 8. 68-Pin Connector D Pin Assignments  
© National Instruments Corporation  
9
MCA-7724 Motion Axis Router  
 

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