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AL200X
Software applications, data logger operating systems, firmware, and drivers for Campbell Scientific products
AL200X
v1.23Current operating system for the AL200X.
This OS includes bug fixes and improvements to the prior version and is recommended for all users.
Revision History
v1.23February 12, 2026
- MinorAdded additional SDI-12 debugging and require temporarily disabling scheduled communication with peripherals when sending commands to SDI-12 sensors to prevent bus contention from long replies. Replies longer than the AL200X’s buffer will be truncated, since that info is normally available in the sensor’s manual (e.g. a very long response to aXHELP!).
- MinorAdded P1 Accumulator report format as 1 to 4-byte TBRG or GSR (with settable roll-over value). Default is 2-byte TBRG.
- MinorImproved test button behavior in both ALERT2 and ALERT modes.
- MajorAdded scheduling for ALERT transmissions to minimize transmission collisions between sites because of GPS sync’d clocks (necessary for logging). Default transmission times are based on s/n (which is also reported in DCU), with ability to override to a different transmit slot in case of collisions when deployed.
- MajorAdded ALERT operating mode, and updated DCU (Device Config Utility) settings to differentiate settings for ALERT vs ALERT2. See manual for details of ALERT mode.
- MinorClarified DCU selection of ALERT Mark and Space tones to reduce ambiguity in AL200 OS1 selections and removed deprecated pairs.
- MinorDisabled FP2 as a report format since some message parsers do not yet support it.
- MinorFilter out listing of advanced commands in terminal response to HELP. Advanced commands can be enabled for that terminal session by issuing ALLWORDS (normal behavior can be reestablished by issuing USERWORDS).
v1.15September 2, 2025
- MajorAdded multiplier and offset to p1 output value.
- MajorFixed report scheduling issues.
- MajorRequire Scan and Report to be a multiple of TDMA Frame Length.