Ndrive HP 10/20/30 User’s Manual
Technical Details
www.aerotech.com 3-9
Figure 3-5.
Advanced 1 - 3 Axis Firing
The Data Capture and Data Update modes allow data to be captured or written to the I/O
on the occurrence of the internal or external trigger. Data Capture mode allows position,
digital inputs, etc. to be captured. Data Update mode allows analog or digital outputs to
be set by the same trigger. The capture and update modes are defined in Figure 3-6. For a
full description of these modes, refer to the Nview HMI help.
These Capture/Update modes, share four FIFO's (queue's) with Window 1 and Window
2, preventing the window-firing modes from being used with the Capture/Update mode.
Using a queue from a window, precludes using that window (1 or 2) for firing, however,
queues from window 1 may be used for data capture/update mode, while queues from
window 2 may be used for window firing purposes. The Capture/Update modes vary for
Window 1 and Window 2, see Figure 3-6.
The data capture mode rate for analog inputs is limited to approximately 100,000
samples per second due to A/D conversion rate. The data update mode for analog outputs
is limited to 500,000 Hertz due to internal serial bus design constraints.
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