Separate PID_MAX from BANG_MAX
This allows PID_FUNCTIONAL_RANGE to use a maximum duty cycle higher than PID_MAX. This is useful for powerful heaters to heat quickly in bang-bang mode, but use a lower duty cycle that is easier to stabilize in PID mode.
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@ -117,7 +117,8 @@
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// PID settings:
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// Comment the following line to disable PID and enable bang-bang.
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#define PIDTEMP
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#define PID_MAX 256 // limits current to nozzle; 256=full current
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#define BANG_MAX 256 // limits current to nozzle while in bang-bang mode; 256=full current
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#define PID_MAX 256 // limits current to nozzle while PID is active (see PID_FUNCTIONAL_RANGE below); 256=full current
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#ifdef PIDTEMP
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//#define PID_DEBUG // Sends debug data to the serial port.
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//#define PID_OPENLOOP 1 // Puts PID in open loop. M104/M140 sets the output power from 0 to PID_MAX
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@ -325,10 +325,10 @@ void manage_heater()
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#ifndef PID_OPENLOOP
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pid_error[e] = target_temperature[e] - pid_input;
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if(pid_error[e] > PID_FUNCTIONAL_RANGE) {
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pid_output = PID_MAX;
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pid_output = BANG_MAX;
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pid_reset[e] = true;
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}
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else if(pid_error[e] < -PID_FUNCTIONAL_RANGE) {
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else if(pid_error[e] < -PID_FUNCTIONAL_RANGE || target_temperature[e] == 0) {
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pid_output = 0;
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pid_reset[e] = true;
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}
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