Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 2064

(240) Execute the PID instruction.
Check the auto tuning operation.
End the auto tuning processing.
Shift to the normal PID action.
(303) Heater output
Write the manipulated value (MV) to D/A converter module.
(336) Error
APPX
2062
Appendix 4 PID Operation Program Examples