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moacon:countmode:index

countMode

void countMode (u8 cntChannel, u8 cntMode)

cntChannel Channel number (0 or 1 for DP-HCNT)
cntMode 0 = basic counter increments on both the rising and falling edge of the input.
1 = encoder counter that counts up or down based on the phase difference between A and B
2 = basic counter increments on the rising edge of the input.
3 = basic counter increments on the falling edge of the input.

When cntMode is 0, 2, or 3 the channel functions as a basic counter. The module reads from port A (A0 for channel 0, A1 for channel 1). When in this mode, nothing should be connected to port B (B0 for channel 0, B1 for channel 1).

When cntMode is 1, the channel functions as an encoder counter.

The module counts up or down based on the phase difference between A and B. If A leads B, the counter counts up. If B leads A, the counter counts down. countMode will always initialize the count to 0. The count will roll over (65,535 to 0 if increasing, and 0 to 65,535 if decreasing) when the count exceeds 65,535 (16 bit maximum) or falls below 0.

When you use 24V open-collector type encoder, connect like this.

 

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moacon/countmode/index.txt · Last modified: 2016/04/14 11:07 (external edit)