Chapter 1. Installation
21
INPUT CONNECTIONS — Connecting to electronic devices such as PLCs
Connection to a
Sinking Output
Device
Connection to a
Sourcing Output
Device
Connection to a
Combination of
Sinking & Sourcing
Outputs
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
Guide. 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
(or to an
external 5-24VDC supply) to accommodate sinking output devices. Then for each individual input
connected to a sourcing output, wire an external resistor between the ZETA6xxx’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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