Models KP1000 series are high-function digital program controllers. Being incorporated with high-performance microprocessors, they have materialized such high accuracies as +/- 0.1% of the indicating accuracy and 0.1 second of the controlling cycle. The controllers enable optimum program control to be performed over the wide temperature range. Since altogether sixteen kinds; viz, eight kinds that can optionally select the PID constants obtained by automatic tuning function step by step, and another eight kinds to be automatically selected by SV values, can be built-in. They are standard-equipped with versatile functions such as multi setting, multi-range input, color LCD digital display and interactive system setting by full dot matrix color LCD.