Rockwell Automation Publication 2198-UM004A-EN-P - October 2019 317
Motion Control Applications Chapter 12
Table 103 - High-speed Position Capture, Additional Information
P5.039 (for DI9)
DI9CaptureControl
Bit Function Description
X 0 Enable capture function When bit 0 = 1, and ID330 (P5.038) > 0, data capturing starts and DO.CAP_OK signal is off. The value of ID330
(P5.038) decrements as data capture continues.
When ID330 (P5.038) = 0 it means that data capture is complete. The DO.CAP_OK signal is on, and bit 0 is cleared to
0.
If bit 0 is already 1, the written value must not be 1; you have to write 0 to disable the Capture function.
1 Reset the axis position
when first data is
captured
If bit 1 = 1, after the first data is captured, the Capture axis position will be set to the value of ID368 (P5.076)
DI9FirstCaptureResetPosition.
2 Enable Compare function
after the first data is
captured
(1)
If bit 2 = 1, when the first data is captured, the Compare function is enabled. (ID351.X (P5.059.X) CompareControl bit
0 = 1 and ID350 (P5.058) CompareRemainedCount resets to the previous setting amount). If the Compare function is
already enabled, then this bit function is ignored.
3 Execute PR#50 after the
last data is captured
If bit 3 = 1, the drive executes PR#50 once data capture is complete
(2)
.
Y – Source of capture axis 0: Disabled
1: Auxiliary encoder (Aux)
2: Pulse command (I/O)
3: Main encoder of motor (MFB)
Z – Trigger logic 0: N.O. (normally open)
1: N.C. (normally closed)
U – Minimum trigger interval
(ms)
–
(1) Compare function only supported in first capture.
(2) See
Special Trigger (Capture, Compare, E-Cam) on page 299.
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