Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 613

Override function (OVERRIDE mode)
This function enables the PV setting on the pop-up tuning window of the PX Developer monitor tool when a correct input
signal cannot be acquired due to a failure of the sensor, limit switch or A/D conversion module.
External outputs of the manual manipulated value and ON/OFF signal are performed.
Execute the override function after changing the mode to OVERRIDE with I/O mode change of the faceplate. For details on I/
O mode change, refer to the following.
 PX Developer Version 1 Operating Manual (Monitor Tool)
■Function
Item
For the loop tag FB
For the status tag FB
For the loop tag FB, the override function can be operated in MANUAL mode only.
Operations in other than the MANUAL mode cannot be operated.
Tag stop function (TAG STOP mode)
This function stops input processing and loop control operation. Set it for the tag reserved for future use.
The tag stop function can be set by changing the I/O mode with the faceplate. For details on I/O mode change, refer to the
following.
 PX Developer Version 1 Operating Manual (Monitor Tool)
■Function
The tag stop function can be used for 2PIDH, PGS2, SWM, PVAL, and HTCL tags.
This function is used for the tag which has been defined for future use with the engineering tool or has stopped.
For details, refer to the description of each function block.
Description
This function enables the PV setting on the pop-up tuning window of the PX Developer monitor tool when a correct PV
input signal cannot be acquired due to a failure of the sensor or A/D conversion module. However, external output is
performed. In this case, MV is output in the MANUAL mode.
The function is used when the input signal is used for inter-lock conditions or transition conditions of batch sequence.
For the PV setting, input the value to the tag monitor field on the pop-up tuning window of the PX Developer monitor tool.
This function enables to set input signals on the pop-up tuning window of the PX Developer monitor tool when a correct
input signal cannot be acquired due to a poor contact of the valve open/close limit switch. However, external output is
performed.
The function is used when the input signal is used for inter-lock conditions or transition conditions of batch sequence.
Appendix 3 Related Functions of Process
A
APPX
611