Delta AS Series Programming Manual page 738

Phase B leads phase A, indicating counting in the negative direction.
16#0003 Reserved
Fourfold frequency A/B phase input
16#0004
Phase A leads phase B, indicating counting in the positive direction.
Phase B leads phase A, indicating counting in the negative direction.
Pulse + directional input (A+/A-: pulse input; B+/B-: directional input)
Phase B ON: counting in the negative direction
16#0005
Phase B OFF: counting in the positive direction
Phase A: counting is started by rising-edge triggered.
Pulse + directional input (A+/A-: pulse input; B+/B-: directional input)
Phase B ON: counting in the positive direction
16#0006
Phase B OFF: counting in the negative direction
Phase A: counting is started by rising-edge triggered.
Single phase pulse input (A+/A-: pulse input)
16#0007
Phase A: counting is started by rising-edge triggered.
Others Reserved
6.
InPulse displays the number of already input pulses, which is a signed 32-bit value. Every time the instruction is
started, the PU module will automatically clear the value to 0 and then starts counting.
7.
InSpeed displays the already detected input frequency which is a 32-bit value. The basic time for the frequency
detection is 20ms. Therefore, the detected input frequency is 0 if there is no counting value within 20ms. If there is
a counting value within 20ms, the output starts at the minimum frequency of 50Hz. Even if OSpeed value is lower
than 50Hz through the Rate-value-based conversion, the output is still conducted at 50Hz.
8.
Rate is the input / output rate and the value is a floating point number. The number of actual output pulses and
frequency are respectively equal to the input pulse number and frequency multiplied by the rate value.
For example: The input frequency is 100Hz and rate is 0.5. So the output frequency is 100x0.5=50Hz. If the
maximum output frequency after conversion exceeds 100KHz, the output frequency is limited to 100KHz.
Note: The long-time maximum frequency output may lead to the fact that as the MPG has stopped running, the
number of outputs is still increased and the output need keep going until it is complete.
9.
OPulse shows the number of pulses which have been output. OSpeed displays the frequency at which the output
is being conducted. They are signed 32-bit values.
10.
When the DPUMPG instruction is disabled, check the frequency at which the output is being conducted and see if it
has reached 0. If the instruction is disabled before the frequency reaches 0, the PU module will stop the output
immediately and the output of the pulses which are counted based on the conversion rate will not continue any more.
Cha p ter 6 App l ied Ins truc tio ns
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