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Contact Supplierdata logger is an electronic recording device that automatically collects and stores data from sensors or signals over time �
Wikipedia
In this case, it specifically logs switch status (ON/OFF) instead of analog values.
⚙️ Working principle
Input: digital signal (0/1) from:
Limit switches
Relay contacts
Push buttons
Machine status outputs
The logger:
Detects state changes (ON → OFF or OFF → ON)
Stores timestamped events in memory
Data can be accessed via:
USB / SD card
RS485 / Ethernet / IoT
Essentially:
Switch changes → Recorded with time → Stored for analysis
Applications
Machine runtime monitoring (ON/OFF hours)
Pump or motor operation logging
Production line monitoring
Alarm/event recording
Energy management systems
Preventive maintenance tracking