Description
Datalog / data-logger module with CF/USB support, designed to save PLC device values and event logs to removable media (CF card or USB stick). Intended for long-term data capture without an external PC.
The Polar Energy Assessment:
The DL16A datalog module stores PLC device values to CF card or USB memory; it supports scheduled or event-triggered file writes and typical file formats for later analysis. The installation guide and datasheet detail CF/USB compatibility, maximum supported media size (check regional manual), data buffering behavior and power/current consumption during heavy writes. Use DL16A when you need on-rack historical logging or offline data export without upstream SCADA dependencies.
Pros
- Local, removable media logging; useful for long-term records or audits.
- Supports CF card and USB memory for flexible media choices.
Limitations
- Check supported CF/USB models and maximum sizes in the manual; not all media are supported.
- File system and write frequency can affect module power draw and CF/USB lifetime.
Typical use cases
- Process data capture for traceability, event logs for faults/alarms, and local data export for QA or maintenance.

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