Mitsubishi Electric MELSEC iQ-R Series User Manual page 221

■Timing of turning ON/OFF of this flag to 'CH1 Automatic backup setting after auto tuning of
PID constants' (Un\G547).
The following figure shows the timing of turning ON/OFF of this flag to 'CH1 Automatic backup setting after auto tuning of PID
constants' (Un\G547). (For CH1)
'CH1 Auto tuning status' (X4)
'CH1 Automatic backup setting
after auto tuning of PID constants'
(Un\G547)
CH1 Write completion flag
(Un\G47, b4)
CH1 Write failure flag
(Un\G47, b12)
After writing of data to the non-volatile memory has been completed successfully, CH1 Write completion flag (Un\G47, b0)
turns ON.
CH1 Write completion flag (Un\G47, b0) turns OFF when the setting of 'CH1 Automatic backup setting after auto tuning of PID
constants' (Un\G547) is changed from Enable (1) to Disable (0).
When writing of data to the non-volatile memory has failed, CH1 Write failure flag (Un\G47, b8) turns ON and the temperature
control module operates with the PID constants calculated in the previous auto tuning (The LED status remains.).
CH1 Write failure flag (Un\G47, b8) turns OFF after writing of data in the channel 1 is completed successfully.
When writing of data has failed, turn OFF and ON 'CH1 Auto tuning command' (Y4) to execute the auto tuning again. If writing
of data fails even after the execution of the auto tuning, a hardware failure has occurred. Please contact your local Mitsubishi
Electric sales office or representative.
Whether the automatic backup is completed successfully or not can be checked by referring to this flag at the
completion of the auto tuning.
■Precautions
After checking that one of the following flags is ON, set 'CH1 Automatic backup setting after auto tuning of PID constants'
(Un\G547) to Disable (0).
• CH1 Write completion flag (Un\G47, b0) (when the automatic backup is completed successfully)
• CH1 Write failure flag (Un\G47, b8) (when the automatic backup fails)
If the auto tuning is executed while 'CH1 Automatic backup setting after auto tuning of PID constants' (Un\G547) is Enable (1),
'CH1 Auto tuning status' (X4) does not turn OFF even though PID constants are stored after the completion of the auto tuning.
Memory's PID constants read/write completion flag (Q compatible mode)
In the Q compatible mode, this flag shows whether an operation to the non-volatile memory has been completed without
errors or has failed depending on the settings in the following buffer memory area:
• 'CH1 Memory's PID constants read command' (in the Q compatible mode) (Un\G62)
• 'CH1 Memory's PID constants read/write completion flag' (in the Q compatible mode) (Un\G63)
For details on this area, refer to the following. In the Q compatible mode, read the buffer memory addresses for the Q
compatible mode.
Page 217 Memory's PID constants read completion flag, Page 218 Memory's PID constants write completion flag
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory area name
Memory's PID constants read/write completion flag (in the Q compatible mode)
ON
OFF
0 1 0
OFF
ON
OFF
Auto tuning completion
(Write failure)
Executed in a program
Executed by the temperature control module
1
Auto tuning completion
(Write normal completion)
CH1 CH2
31
Appendix 3 Buffer Memory Areas
0
ON
CH3 CH4
APPX
A
219