CNCdrive DG4S Series, Manual

Page: 15 / 22

15 CONTENTS
Figure 5. Interfacing the error line
5.5 Reset Line wiring
The reset line is a TTL level input. The line is held on 5Volts potential (referenced to the
digital powersupply ground) by internal weak pullup resistors with an approximate value
of 100kOhm.
The reset line can be activated by external logic with pulling the line low. Releasing the line
returns the line to a high (5V) state. It is only allowed to pull the error line low (GND poten-
tial) externally. Pulling the line high with any external logic may cause the output Mosfet
transistor to overheat and damage!
5V from AUX port pin 1.
GND from AUX port pin 2.
Optoisola
tor
470 R
Error
line
Error
line
Error
line
Drive 1.
Drive 2.
Drive n.
PC input
PC GND
External
control
logic
Internal
control
logic
Internal
control
logic
Internal
control
logic
External
pushbutton
+V
5V
5V
5V
~100k
~100k
~100k
+V
+V
+V