Apc ups serial protocol

Powerchute business edition. Powerchute personal edition, powershute business edition operating system. Ups software windows, bit monitor battery status, apc powerchute software. Usb serial data. Powerchute business edition agent. Compatible with all Windows operating systems 98 and more recent and with all Linux distributions.

Possible values: 55, 50, 45, Possible values: 90, 80, 70, Do not execute this comman until you know what you are doing. Can be aborted with a second "D". Possible values:R unacceptable utility voltage rate of change H high utility voltage L low utility voltage T line voltage notch or spike O no transfers since turnon S transfer due to U command or activation of UPS test from front panel NA transfer reason still not available; read again.

Command executes after grace period. This must be sent before any other commands will work. UPS switches load off immediately no grace period.

Returns three main sections delimited by periods:Protocol versionAlert messages aka async notifiers Valid commands. See Interpretation of the New Firmware Revision. The battery voltage that's expected to be present in the UPS normally. Unique within groups of UPSes production runs. Expected output voltage when running on batteries. The UPS will report a low battery condition this many minutes before it runs out of power. Resets most variables to initial factory values except identity or battery change date.

Cycle forward through possible capability values. Cycle backward through possible capability values. UPS shuts down after grace period with delayed wakeup after nnn tenths of an hour plus any wakeup delay time. Register 2 Matrix UPS models report bits 0 - 5. Bit Meaning 0 Output unpowered due to shutdown by low battery 1 Unable to transfer to battery due to overload 2 Main relay malfunction - UPS turned off 3 In sleep mode from maybe others 4 In shutdown mode from S 5 Battery charger failure 6 Bypass relay malfunction 7 Normal operating temperature exceeded.

Command character - use this to select the value Locale - use b to find out what yours is, 4 applies to all Number of choices - 4 means there are 4 possibilities coming up Choice length - 3 means they are all 3 chars long. Matrix-UPS models have between each grouping for some reason. Acknowledgements Large parts of this data were contributed or corrected by Steven Freed.

See "Capabilities" section for more info. This obviously varies a lot based on the current charge. Compare this to the nominal battery voltage.

If this varies much, have a word with your local electrician. Writable variable Values: R unacceptable utility voltage rate of change H high utility voltage L low utility voltage T line voltage notch or spike O no transfers yet since turnon S transfer due to U command or activation of UPS test.

Does not necessarily read This is the max voltage since the last time this query was run. Like the one above, this one also resets itself on every query. Also see on battery output voltage. See status flags section for more info.

Command executes after grace period UPS goes online when power returns Only works when on battery. Can be used to determine abilities of hardware.

Tests battery, like pushing the test button on the front panel Also see test results entry. This must be sent before anything else on this page will work.

Also see turn dumb command to exit smart mode. Returns three main sections: Protocol version Alert messages aka async notifiers Valid commands Sections are separated with a period.

Decoding above info: Writable variable Up to 8 letter identifier for keeping track of your hardware. Minutes Must be calibrated to be effective.

Writable variable - seconds See capabilities to read values Sets the delay before soft shutdown completes. Writable variable - minutes See capabilities to read values The UPS will report a low battery this many minutes before it runs out of power.

Writable variable - seconds See capabilities to read values The UPS will wait this many seconds after reaching the minimum charge before returning online. Writable variable See capabilities to read values UPS goes on battery after voltage rises above this point. Writable variable This holds whatever the user sets in it, much like the UPS local id variable. Only works if firmware letter is later than O. Abort shutdown - use to abort , S , K Also known as the delete key in some places. See dip switch table Only makes sense on models which actually have dip switches.

Degrees C Writable variable See lower temp limit above. Matrix-UPS and Symmetra commands.