User manual

PCI-1240/PCI-1240U User Manual 34
3.15 I/O Signal Timing
3.15.1 Power On RESET
Figure 3.21: Timing Diagram of Power On RESET
• Output pulses (nP ± P, nP ± N) for drive control and general purpose
output signals (nOUT4 ~ 7) for I/O control will be determined after 250
nsec from power on reset.
• User can access PCI-1240/PCI-1240U only after 500 nsec from power-
on reset.
3.15.2 Individual Axis Driving
Figure 3.22: Timing diagram of Individual Axis Driving
• The maximum time to output command pulse after first pulse command
is about 650nsec.
• When pulse/direction mode, the direction signal will valid after 275
nsec and pulse output will vaild after 375 nsec after direction signal.