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STM23R Hardware Manual
920-0056C
5/5/2015
Connecting Input Signals
e STM23R has three inputs:
•STEP:ahighspeeddigitalinputforsteppulsecommands,5-24voltlogic
•DIR:ahighspeeddigitalinputforthedirectionsignal,5-24voltlogic
•EN:a5-24Vinputforcommandingtheremovalofpowerfromthemotor
Note: STEP and DIR inputs can be converted to STEP CW and STEP CCW by moving switch #8 to the ON position. See Page 21.
Connector Pin Diagram
Internal Circuit Diagram
inside drive
220 pF
STEP+
1
2
3
4
5
6
7
8
STEP-
220 pF
DIR+
DIR-
220 pF
EN+
EN-
OUT+
OUT-
1 2 3 4 5 6 7 8 1 2 3 4
STEP+
STEP
-
DIR+
DIR
-
EN+
EN
-
OUT+
OUT
-
V-
V
+
S/RSETUP
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