High-Speed Counter (Pulse Density Measurement Mode) - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

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High-speed counter (pulse density measurement mode)

The pulse density measurement mode for high-speed counters is explained below. The pulse density measurement mode is

not supported in high-speed pulse input/output modules.

When in pulse density measurement mode, pulse is counted from count input of the high-speed counter, and the number of

pulses for a specified amount of time is automatically counted.

Parameter setting

Set operation mode to pulse density measurement mode by high-speed counter parameter setting.

Sets detailed settings for channel used.

Navigation window  [Parameter]  [Module model name]  [Module Parameter]  [High Speed I/O]  "Input

Function"  "High Speed Counter"  "Detailed Setting"  "Basic Settings"

Displayed items

Operation Mode

Pulse Input Mode

Preset Input Enable/

Input Comparison Enable/

Control Switch

Preset Value

25 HIGH-SPEED INPUT/OUTPUT FUNCTION

25.1 High-speed Counter Function

Set whether use counter or not.

Set operation mode.

Set pulse input mode.

Not available for high-speed counters (pulse density measurement

Setting range

• Normal Mode

• Pulse Density Assumption Mode

• Rotation Speed Measurement Mode

• 1-Phase 1 Input (S/W Up/Down Switch)

• 1-Phase 1 Input (H/W Up/Down Switch)

• 1 Phase 2 Input

• 2 Phase 1 Multiple

• 2 Phase 2 Multiple

• 2 Phase 4 Multiple

• Internal Clock (1MHz)