Appendix B
Motion Connection Accessories
B-6
ni.com
Table B-2.
CN1A through CN4A Pin Assignments
Accessory Signal
CNA Pin
Number
Drive Signal
Line Ground
1
LG (Control common)
Axis <1..4> Dir (CCW)+
2
NP (Forward rotation pulse train)
Axis <1..4> Step (CW)+
3
PP (Reverse rotation pulse train)
NC (No connection)
4
P15R (15 VDC power supply)
Axis <1..4> Index (Encoder Phase Z)+
5
LZ (Encoder index phase)
Axis <1..4> Encoder Phase A+
6
LA (Encoder A phase)
Axis <1..4> Encoder Phase B+
7
LB (Encoder B phase)
Axis <1..4> General Purpose Output 0
8
CR (Clear)
+24 V
9
COM (power supply input signal)
Isolated Ground
10
SG (Digital I/F common)
NC
11
OPC (Open collector power input)
Axis <1..4> Dir (CCW) –
12
NG (Forward rotation pulse train)
Axis <1..4> Step (CW)–
13
PG (Reverse rotation pulse train)
NC
14
OP (Encoder Z phase pulse
(open collector))
Axis <1..4> Index (Encoder Phase Z)–
15
LZR (Encoder index phase)
Axis <1..4> Encoder Phase A–
16
LAR (Encoder A phase)
Axis <1..4> Encoder Phase B–
17
LBR (Encoder B phase)
Axis <1..4> In-Position
18
INP (In-position)
Axis <1..4> General Purpose Input 1
19
RD (Ready)
Isolated Ground
20
SG (Digital I/F common)