Omron 3G3RX - Multi-Function Pulse Counter (PCNT, PCC)

4-94
4-2 Function Mode
4
Functions
Multi-function Pulse Counter (PCNT, PCC)
•The Inverter can input pulse trains via a multi-function input.
•With pulse counter monitor d028, you can monitor the total count of input pulses.
•The total pulse count value cannot be stored. After the power is turned on or after reset, the counter
is reset to zero.
•Turning on PCC (pulse counter clear) clears the total count value.
•The input pulse frequency resolution can be obtained with the following formula. (This applies to
pulse input with a 50% duty ratio.) The Inverter cannot input frequency higher than the specified
frequency resolution. It is recommended that you use input frequencies up to 100 Hz. For details
on input terminal response, refer to "Input Terminal Response Time" (page 4-108).
Parameter No. Function name Data Default setting Unit
C001 to C008
Multi-function inputs
1 to 8 selection
74: PCNT (pulse counter)
75: PCC (pulse counter clear)

Related functions d028
Frequency resolution (Hz) = 250/(Input terminal response time set values C160 to C168 + 1
Example: When the input terminal response time = 1, the frequency resolution = 125 Hz.
Input pulse
PCNT
ON
OFF
Input termina l response time
1
2 3
4
Counter value