I/O Signal Timing; Power On Reset; Individual Axis Driving - Advantech PCI-1220U User Manual

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 (nOUT0 ~ 3) for I/O control will be determined after 250
nsec from power on reset.
• User can access PCI-1220U only after 500 nsec from power-on reset.

3.15.2 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.
PCI-1220U User Manual
Figure 3.22: Individual Axis Driving
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