C-138
Up/Down Counting Meter
K3NC
■
Block Diagram
■
Rotary Encoder Connection Example
Input circuit
Sensor A
Sensor B
GND
Control input
Frequency measurement circuit
Waveform adjustment circuit
8-bit microcomputer
Control input circuit
Power supply
for sensor
Control power
supply
Control input
circuit
Power supply
circuit
Frequency
measurement
circuit
Waveform
adjustment
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
LED
Key
switch
8-bit
microcomputer
Output
circuit
Power supply for
sensor (input circuit)
0 V
Phase A
Phase B
INA/INB
Counts input signals.
Accepts Up/Down (individual or phase difference) inputs.
RESET
Resets the present value to zero.
No counting inputs are accepted when a RESET input is ON.
RESET is lit when a RESET input is ON.
Note:
External reset minimum signal width: 16 ms
COMPENSATION
Resets the present counting value to the compensation value at the rising edge of a compensation input. In the
compensation value setting parameter, it is possible to set to “Effective during incrementing and decrementing a
count” or to “Effective only during incrementing a count.”
Note:
External compensation input minimum signal width: 16 ms
BANK 1, 2
Selects one of the four banks.
Bank no. Control input
Bank 1 Bank 2
1OFFOFF
2ONOFF
3OFFON
4ONON
Note:
Bank switching minimum signal width: 100 ms max.
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