If the system is in an error state, then the word “Error” will be added
on to the end of each line of data to make it obvious that something is
going wrong. If that happens, you’ll see something like this:
21.2 24.9 32.0 0.55 0.63 0.59 1 Error
22.8 25.0 32.0 0.54 0.63 0.59 1 Error
23.7 25.1 32.0 0.53 0.61 0.57 1 Error
Control = Control temperature (°C) (always equals zero if unused)
Safety = Safety temperature (°C)
Setpoint = Setpoint temperature (°C)
Heater = Heater output (0-1.0 with no heat generated below 0.18)
I1 = Current through first heater channel (Amps)
I2 = Current through second heater channel (Amps)
Runaway = Error state (0 for no error, 1 for error)
6. When monitoring the controller from your computer, it will output the
following serial error messages if it detects something a problem:
6.1 Overcurrent detected and max_command_normal reduced to 0.xx
This means that the controller detected current higher than the
maximum level defined in the settings menu when the safety
temperature is toward the lower end of the range and it reduced
the software limit in response. This can happen normally and isn’t
something to worry about unless it starts showing up frequently.
6.2 Overcurrent detected and max_command_hot reduced to 0.xx
This means that the controller detected current higher than the
maximum level defined in the settings menu when the safety
temperature is toward the upper end of the range and it reduced
the software limit in response. This can happen normally and isn’t
something to worry about unless it starts showing up frequently.
6.3 Heater malfunction - shut the system down.
This message is only displayed after the controller detects excessive
current and tries to reduce its software limits below reasonable values.
This will typically only occur when a heater transistor fails short or
its mounting screw comes loose. If this error gets displayed, then the
heaters are disabled and you’ll need to restart the controller to turn
them back on.
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