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

Normal mode for high-speed counters is explained below.
Use normal mode if you want to use as an ordinary high-speed counter.
Set operation mode to normal 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



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)



Preset Input Enable/
Disable

Set whether to "enable" or "disable" the preset input of counter.

• Disable
• Enable



Input Logic

Sets preset input logic when preset input is enabled.

• Positive Logic
• Negative Logic

