User manual

PCI-1240/PCI-1240U User Manual 22
3.4 General Purposed Output (nOUT7 ~ nOUT4)
The general purposed output nOUT7/DSND, nOUT6/ASND, nOUT5/
CMPM, and nOUT4/CMPP are from MCX314/MCX314AS, and each
output signal is OFF status after system reset.
Figure 3.6: Circuit Diagram for General Purposed Output
General purposed output signals used in motor drives can clear error
counter, alarm reset, stimulus off, etc., or select acceleration/deceleration
for driving, position counter, and the status of comparison register as your
output during driving.
3.5 Over Traveling Limit Switch Input (nLMT+, nLMT-)
Over traveling limit switches are used for system protection. This input
signal is connected to the limit input of MCX314/MCX314AS through
the connection of photo coupler and RC filter. When the limit switch is
applied, the external power VEX DC12~24V will source the photo cou-
pler, and then the nLMTP in MCX314/MCX314AS will be low level.
This enables the over traveling function if the desired level of nLMTP is
set to low.
Figure 3.7: Circuit Diagram for Movement Limit Input Signals