diff -r 9833fd86736b -r 1bc6e9263ada main/task_driver.h
--- a/main/task_driver.h	Thu Jun 17 13:58:13 2021 +0200
+++ b/main/task_driver.h	Sat Jun 19 20:46:42 2021 +0200
@@ -43,6 +43,9 @@
     double mlt_sp;			///< Setpoint MLT temperature
     double mlt_pv;			///< Current MLT temperature
     int    mlt_power;			///< Current MLT drive power %
+    int    pwm_gpio;			///< PWM GPIO pin
+    bool   pwm_mlt;			///< PWM in use for MLT
+    int    pwm_nohlt;			///< PWM power limit to shutdown HLT
     int    hlt_gpio;			///< HLT SSR  GPIO pin
     int    hlt_mode;			///< HLT Mode:  0 = off, 1 = bang on/off, 2 = always on
     double hlt_sp;			///< Setpoint HLT temperature