e.bloxx D1-1, D1-4
MEASUREMENTS
27
HB_EBLOXX-D1_E_V18.doc
Gantner Instruments Test & Measurement GmbH
Picture
4.10 - Signal Diagram of Up/Down Counter (Example at I/O 1 and I/O 2)
When configuring a digital input as a counter for counting up and counting down, the e.bloxx D1-1 or D1-4 constantly
monitor the digital inputs (in this example I/O 1 and I/O 2) for a signal variation. If a negative signal edge (1 -> 0) occurs
at the first input (here I/O 1), the current result is increased by 1 (if signal level at I/O 2 = 0) or decreased by 1 (if signal
level at I/O 2 = 1), according to the status of the second digital input.
The range of values of the counter is from approx. -2,1 billion up to +2,1 billion (32 bit). The values can be reset to zero
via the bus or via a digital input of the e.bloxx. Up to 4 up/down counters can be defined. The maximal counting
frequency is 400 kHz.
Notice:
After a voltage cut-off all counters are reset to zero.
4.9. Digital Input - Quadrature Counter
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4.11 – Quadrature Counter (Example at I/O 1 and I/O 2)
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4.12 - Signal Diagram of Quadrature Counter (Example at I/O 1 and I/O 2)
Содержание e.bloxx D1 Series
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