Mitsubishi Electronics FX5 ユーザーズマニュアル

19  BUILT-IN I/O FUNCTION
19.1  High-speed Counter Function

The pulse density measurement mode for high-speed counters is explained below.
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.
Set operation mode to pulse density measurement mode by high-speed counter parameter setting.
Sets detailed settings for channel used.

Navigation window  [Parameter]  [FX5UCPU]  [Module Parameter]  [High Speed I/O]  “Input Function"  “High 
Speed counter"  "Detail Setting"  “Basic Settings"

Window

Displayed items

Use/Not Use

Set whether use counter or not.

• Disable
• Enable

Disable

Operation Mode

Set operation mode.

• Normal Mode
• Pulse Density 

Assumption Mode

• Rotation Speed 

Measurement Mode

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Pulse Input Mode

Set pulse input 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)

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