Contents
NI 951x User Manual
vi
ni.com
Chapter 3
Signal Connections
Power Connections ........................................................................................................ 3-4
Command Signals.......................................................................................................... 3-4
Stepper Command Signals .............................................................................. 3-4
Step (CW)± and Direction (CCW)± ................................................. 3-4
Servo Command Signals ................................................................................. 3-7
Drive Command Output ................................................................... 3-7
Drive Command COM ..................................................................... 3-7
Additional Drive Signals................................................................................. 3-7
Drive Enable .................................................................................... 3-7
Motion I/O Signals ........................................................................................................ 3-9
Limit and Home Inputs ................................................................................... 3-9
Limit and Home Input Circuit .......................................................... 3-9
Encoder Inputs ................................................................................................ 3-11
Encoder Phase A/Phase B................................................................. 3-12
Encoder Index................................................................................... 3-12
Encoder Input Circuit ....................................................................... 3-13
Position Capture Input and Position Compare Output.................................... 3-14
Digital I/O Signals......................................................................................................... 3-15
Digital Inputs................................................................................................... 3-15
Digital Outputs ................................................................................................ 3-17
Chapter 4
Accessory and Cable Connections
Connection to P7000 Series Stepper Drives.................................................................. 4-1
NI 951x Connection Accessories .................................................................................. 4-5
37-Pin Terminal Block Pin Assignments........................................................ 4-5
Signal Connection Recommendations........................................................................... 4-7
General Connection Recommendations.......................................................... 4-7
Limit and Digital Input Connection Recommendations ................................. 4-8
Encoder Connection Recommendations ......................................................... 4-8
Connecting Optional Signals ......................................................................................... 4-9
Connecting a Brake Signal.............................................................................. 4-9