NI 9512 Operating Instructions and Specifications
20
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Encoder Active
The Encoder Active LED (green) has three states for encoder and
V
s
u
p
stat
u
s.
•
Off
—The req
u
ired power s
u
pply (V
s
u
p
) is not connected. Yo
u
m
u
st connect a power s
u
pply to receive encoder p
u
lses.
•
Flashing
—The power s
u
pply (V
s
u
p
) is connected and the
mod
u
le is receiving encoder p
u
lses.
Note
The LED flash rate does not correspond to the rate
at which the NI 9512 receives encoder p
u
lses.
•
Lit
—The power s
u
pply (V
s
u
p
) is connected b
u
t the mod
u
le is
not receiving encoder p
u
lses.
Limit Active
The Limit Active LED (yellow) has two states to display the stat
u
s
of the limits and home inp
u
t.
•
Off
—The power s
u
pply (V
s
u
p
) is not connected, or both the
limits and home inp
u
t are not active.
•
Lit
—The power s
u
pply (V
s
u
p
) is connected and the forward
limit, reverse limit, or home inp
u
t is active.