©
National Instruments Corporation
17
MID-7604/7602 Stepper Power Motor Drive User Guide
Note
In older versions of the MID-7604/7602, the red status LEDs do not illuminate when the
yellow status LEDs illuminate. This behavior only occurs in newer versions of the MID-7604/7602.
Execute a halt stop to de-assert the inhibit signal from the controller, after which you must wait at least
500 ms before executing a start.
Breakpoint and Trigger Terminal Blocks
Both the breakpoint and trigger connectors use a 6-pin removable terminal block.
The trigger terminal block provides access to the trigger input lines, shutdown input line, and digital
ground. The breakpoint terminal block provides access to the breakpoint output lines, +5 V supplied by
the MID-7604/7602, and digital ground. Figures 11 and 12 show the breakpoint and trigger 6-position
terminal block assignments.
Figure 11.
Trigger Terminal Block Pin Assignment
Figure 12.
Breakpoint Terminal Block Pin Assignment
Analog I/O Terminal Blocks
The MID-7604/7602 has two analog I/O connectors. The analog input connector uses a 6-pin removable
terminal block, and the analog output connector uses a 5-pin removable terminal block.
The analog input terminal block provides access to four analog-to-digital converter channels, an analog
reference voltage from the converter circuit, and an analog input ground signal. The analog output
terminal block provides access to four digital-to-analog converter channels with ±10 V output range and
analog output ground. Refer to Figures 13 and 14 for terminal block pin assignments.
Figure 13.
Analog Input Terminal Block Pin Assignment
1
2
3
4
5
6
Trigger Inp
u
t 1
Trigger Inp
u
t 2
Trigger Inp
u
t 4
Digit
a
l Gro
u
nd
Trigger Inp
u
t
3
S
h
u
tdown Inp
u
t
1
2
3
4
5
6
Bre
a
kpoint O
u
tp
u
t 1
Bre
a
kpoint O
u
tp
u
t 2
Bre
a
kpoint O
u
tp
u
t 4
Digit
a
l Gro
u
nd
Bre
a
kpoint O
u
tp
u
t
3
+5 V
1
2
3
4
5
6
An
a
log Inp
u
t 1
An
a
log Inp
u
t 2
An
a
log Inp
u
t 4
An
a
log Inp
u
t Gro
u
nd
An
a
log Inp
u
t
3
An
a
log Reference (O
u
tp
u
t)
