Encore 24 PORTS NWAY SWITCHING HUB User Manual download pdf (Page 17)

6222 User’s Manual Counter Input 4-1

Counter Input 4

The 6222 has four 32-bit counter inputs that accept frequency inputs up to 20 MHz. The counter inputs are

individually configurable for counter or encoder measurements.

You activate each input, enable logging, and configure counter options with Encore.

Counter Settings

Counter Source

The source to use for the counter. Choices are:

 Internal Clock

 Timer 1

 Timer 2

 Digital Line 0 – Digital Line 7

One source can be used in multiple counters.

Counter Gate

The gate to use for the counter. Choices are:

 Unused (do not gate the counter)

 Internal Clock

 Timer 1

 Timer 2

 Digital Line 0 – Digital Line 7

One gate can be used in multiple counters.

Count Settings

The functions or values for the counter source. Choices are:

 Clear on Read – The counter counts up and is cleared after each read. By default,

the counter counts up and only clears the counter at the start of a new scan

command. The value of the counter before it is cleared is latched and returned.

 Totalize – The counter counts up and is cleared at the start of a new scan.

 Start Count value – The value used to start counting. The default is zero.

 Stop Count value – The value used to stop counting. The default is 65535.

 Rollover – The count rolls over upon reaching the start or stop value.

Counter Source

Direction

The direction in which to count. Choices are:

 Increment – Count up (default).

 Decrement – Count down.

Counter Source

Detection

The count to detect in relation to the signal edge. Choices are:

 Rising Edge – Detects the count when the signal goes from low to high.

 Falling Edge – Detects the count when the signal goes from high to low.

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Encore 24 PORTS NWAY SWITCHING HUB User Manual Page 17