National Instruments NI 9512 User Manual - page 21
© National Instruments
|
2-9
Figure 2-7 shows the NI 9516 block diagram. Refer to Chapter 3,
, for more
information about the individual signals and connecting devices to the module.
Figure 2-7.
NI 9516 Block Diagram
User Connectors
The NI 951x has two connectors, a 15-pin DSUB drive interface connector and a 20-pin MDR
feedback connector. The 15-pin DSUB includes command signals for interfacing with stepper
drives or servo amplifiers, 0 to 30 V general-purpose digital input and digital output lines, and
an input for power connection.
The 20-pin MDR connector includes incremental encoder feedback inputs, a +5 V output for
encoder power, home, limit, and position compare inputs, an output for position compare, an
additional input for power connection, and an additional 0 to 30 V general-purpose digital input
line. Refer to Chapter 3,
, for details about the signals in each connector.
Note
The remainder of this document does not distinguish between drives and
amplifiers. All references to drives also apply to amplifiers.
NI 9512 Connectors
Refer to Chapter 4,
Accessory and Cable Connections
, for cabling options and connection
accessory pin assignments.
Caution
Do
not
connect anything to pins marked Reserved.
Ph
as
e A
± (0)
DAC
Ph
as
e B
± (0)
Ph
as
e A
± (1)
Ph
as
e B
± (1)
Index
± (0)
Home
Digit
a
l Inp
u
t (0-1)
Po
s
ition
C
a
pt
u
re
Po
s
ition
Comp
a
re
Receiver
Circ
u
itry
+5V Reg
+5 V OUT
V
su
p
COM
O
u
tp
u
t
Circ
u
itry
Inp
u
t
Circ
u
itry
Drive
Comm
a
nd
Drive
En
ab
le
Forw
a
rd
Rever
s
e
Microproce
ss
or
(PID Loop)
B
u
ffer
B
u
ffer