Robot control device and plasma cutting method

A robot control device of a teaching-playback type controlling an operation of a plasma cutting robot programmed by teaching, the robot control device comprising:

• a program reading unit configured to read a teaching program to operate the plasma cutting robot;
• a program interpreting unit configured to interpret the teaching program which has been read;
• and
• a program executing unit configured to execute the teaching program which has been interpreted, wherein
• in a case where the program interpreting unit has interpreted a plasma cutting start instruction including an arc start condition for plasma cutting in the teaching program, the program interpreting unit sets an arc start height of a torch in the plasma cutting robot included in an arc start condition of the plasma cutting start instruction by using position information that has been taught in a move instruction generated after the plasma cutting start instruction.