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API Documentation: "heater0" Variable Confusion


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Posted · API Documentation: "heater0" Variable Confusion

I'm currently working with my Ultimaker S5 in developer mode and reading off the temperature values I get from the API documentation (specifically, /printer/diagnostics/temperature_flow/{sample_count}). While I understand what most of the values stand for (i.e., "target0" is the target temperature in Celsius of the primary print core set by the g-code, "temperature0" is the current temperature in Celsius of the primary print core) I'm confused as to what "heater0" stands for, and what units it's in.

I get that it is some value which the heater is set to in order for the temperature of the print core to reach the target temperature (standard feedback control type of operation), but I have no idea if this is some reading in volts, amps, or some other scaled value. I'm trying to get a better understanding of the temperature control in the S5 and the value of "heater0" is perplexing as I can't interpret exactly what it means.

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    Posted (edited) · API Documentation: "heater0" Variable Confusion

    I think am fairly sure heater0 is the PWM value that the controller uses to send power to the heater. As such, there is no unit. A value of 255 means "give 'r all she's got" and a value of 0 means "no more power to the heater at this point".


    If it helps, see it as a percentage. Only a percentage that goes from 0-255 instead of 0-100.

    Edited by ahoeben
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