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APEX615n Installation Guide
INPUT CONNECTIONS —
Connecting to electronic devices such as PLCs
Connection to a
Sinking Output
D e v i c e
Connection to a
Sourcing Output
D e v i c e
Connection to a
Combination of
Sinking &
Sourcing
O u t p u t s
Electronic
Device
Out 5-24 Volts
ISO GND
74HCxx
6.8 K
Ω
47 K
Ω
Input
Connection
Ground
Connection
Output
Ground
+5VDC
IN-P
+5V
GND
Pulled up
to +5V
(sourcing)
The output should
be able to sink at
least 1mA of current.
APEX615n
ISO GND
Electronic
Device
Out 5-24 Volts
ISO GND
74HCxx
6.8 K
Ω
47 K
Ω
Input
Connection
Ground
Connection
Output
Ground
+5VDC
IN-P
+5V
GND
Pulled
down to
ground
(sinking)
APEX615n
ISO GND
V1
R1
Typical value for R = 450
Ω
(assuming R1 = 0)
Note: The value of R may vary depending on the value of R1 and V1.
Electronic
Device
Out 5-24 Volts
ISO GND
74HCxx
6.8 K
Ω
47 K
Ω
Input
Connection
Ground
Connection
Output
Ground
+5VDC
IN-P
+5V
GND
Pulled up
to +5V
(sourcing)
APEX615n
ISO GND
V1
R1
R
PROGRAMMING TIP
Connecting to a
sinking output? Set the
input's active level to low
with the
INLVL
command
(
Ø
= active low).
Connecting to a
sourcing output? Set
the input's active level to
high with the
INLVL
command (
1
= active high).
Thus, when the output is
active, the
TIN
status
command will report a “
1
”
(indicates that the input is
active), regardless of the
type of output that is
connected.
Details on setting the active
level and checking the input
status are provided in the
6000 Series Programmer's
Refer also to the
INLVL
and
TIN
command descriptions
in the
6000 Series Software
Reference .
NOTE:
If you will be connecting to a combination of sourcing and sinking outputs, connect
IN-P
to
+5V
to
accommodate sinking output devices. Then for each individual input connected to a sourcing output, wire
an external resistor between the APEX615n's programmable input terminal and ground (see “R” in above
drawing). The resistor provides a path for current to flow from the device when the output is active.
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