Omron RX User Manual page 197

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.
Parameter No. Function name
Multi-function inputs
C001 to C008
1 to 8 selection
Related functions
•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 4-106).
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
ON
PCNT
OFF
Counter value
Data
74: PCNT (pulse counter)
75: PCC (pulse counter clear)
Input terminal response time
1 2
4-2 Function Mode
Default setting
⎯
d028
3 4
Unit
⎯
4
4-92