PLC pulse frequency conversion - Solutions - Huaqiang

Probe domestic high frequency needle JKT-50L high frequency needle with 3 probes

SMD aluminum electrolytic capacitor

Shunluo Inductance Power Inductor SWPA Series First Class Agent

Photocoupler

The plc pulse frequency function reads the pulse frequency of the high-speed counter input, converts it to the rotation speed, or converts the current value of the counter into a cumulative number of revolutions. It converts the value into hexadecimal 8-bit output and can only be used in high-speed counters. Used in 0. When performing frequency-rotation speed conversion. The rotation speed is calculated using the pulse frequency input from the high-speed counter and the number of pulses per revolution. When the current value of the counter is converted to the cumulative number of revolutions, the cumulative number of revolutions is calculated using the current value of the counter and the number of pulses per revolution. The specific steps of use are as follows.
(1) Use of high-speed counter/non-use setting: Set [High-speed counter 0 use/non-use] set by the PLC system to "Use".
(2) Counter mode selection: Select [High-speed counter O] / [Counting mode] in the PLC system setting.
(3) Selection of value range mode: Select PLC system setting [High speed counter O] / [Value range mode]. When the value range mode is set to the ring mode, set the PLC system setting [High Speed ​​Counter 0] / [Ring Counter Maximum].
(4) Reset mode selection of the current value of the high-speed counter: Select PLC system setting [High-speed counter O] / [Reset mode].
(5) Execution of PRV2 instruction: In the case where the frequency is converted to the number of revolutions, the operand C1 is the control data [frequency-rotation speed conversion: #0000]; the operand C2 is the system setting [pulse per one revolution] The number (Hα)]; the operand D is the conversion result storage destination low-order CH number. In the case of converting the current value of the counter to the number of revolutions, the operand C1 is the control data [counter current value - the cumulative number of revolutions: #0001]; the operand C2 is the coefficient setting [number of pulses per lap (Hα) )]; operand D is the low-order CH number of the conversion result save destination.