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

Precautions
• Input used varies according to channel selected and pulse input mode.
• If not using preset input or enable input, you can use it as input for other functions.
• If mode is other than normal mode, preset input cannot be used.
• Use the HIOEN/DHIOEN instruction to start high-speed counter measurement.
• There are common precautions when using high-speed counters. For details, refer to Page 246 Precautions when
using high-speed counters.

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]  [FX5UCPU]  [Module Parameter]  [High Speed I/O]  "Input Function"  "High
Speed counter"  "Detail Setting"  "Basic Settings"
Window
Displayed items
Item Description
Use/Not Use Set whether use counter or not.
Operation Mode Set operation mode.
Setting range
• Disable
• Enable
• Normal Mode
• Pulse Density
Assumption Mode
• Rotation Speed
Measurement Mode
24 HIGH-SPEED INPUT/OUTPUT FUNCTION
24.1 High-speed Counter Function
24
Default
Disable

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