Applied Motion STM23C-3CE - Manual (Page 30)

High Speed Digital Inputs
The STM23 drives include two high-speed inputs labeled STEP (or IN1) and DIR (or IN2). They accept 5 to 24
volt single-ended or differential signals, up to 2 MHz. Typically these inputs connect to an external controller that
provides step & direction command signals. You can also connect a master encoder to the high-speed inputs for
“following” applications. Or you can use these inputs with Wait Input, If Input, Feed to Sensor, Seek Home and
other SCL or Q commands.
Connection diagrams follow.
Connecting to indexer with Sinking Outputs
Connecting to indexer with Sourcing Outputs
Connecting to Indexer with Differential Outputs
(Many High Speed Indexers have Differential Outputs)
STM23
DIR/IN2+
DIR DIR/IN2-
STEP/IN1+
STEP STEP/IN1-
Indexer
with
Sinking
Outputs
5-24 VDC
STM23
Indexer
with
Sourcing
Outputs
GND
STEP
DIR DIR/IN2+
DIR/IN2-
STEP/IN1+
STEP/IN1-
STM23
DIR+ DIR/IN2+
DIR- DIR/IN2-
STEP/IN1+
STEP-
STEP+
STEP/IN1-
Indexer
with
Differential
Outputs
30
STM23 Hardware Manual
920-0021F
2/14/2012