subplot(511), plot(time,kendali), grid on, xlabel('time [sec]'), ylabel('control [Volt]')
subplot(512), plot(time,suhu), grid on, xlabel('time [sec]'), ylabel('temp [C]')
subplot(513), plot(time,sensor), grid on, xlabel('time [sec]'), ylabel('sensor [Volt]')
subplot(514), plot(time,ref), grid on, xlabel('time [sec]'), ylabel('REF [Volt]')
subplot(515), plot(time,error), grid on, xlabel('time [sec]'), ylabel('ERROR [Volt]')