Mitsubishi Electric MELSEC iQ-R Series User Manual page 299

CH1 Automatic backup setting after auto tuning of PID constants
This function automatically backs up the setting values stored in buffer memory areas at the completion of the auto tuning into
the non-volatile memory. By reading the set values backed up, when the power is turned from OFF and ON or the CPU
module is reset and the reset is cleared, another auto tuning can be omitted.
For details on the auto tuning function, refer to the following:
Page 38 Auto Tuning Function
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory area name
CH Automatic backup setting after auto tuning of PID constants
CH Automatic backup setting after auto tuning of PID constants (in the Q
compatible mode)
■Buffer memory areas from which set values are backed up to the non-volatile memory
The following table lists the buffer memory areas whose values are backed up.
Buffer memory area name
CH1 Proportional band (P) setting
CH1 Heating proportional band (Ph) setting
CH1 Cooling proportional band (Pc) setting
CH1 Integral time (I) setting
CH1 Derivative time (D) setting
CH1 Loop disconnection detection judgment time
■Setting range
• 0: Disable
• 1: Enable
■Default value
The default value is Disable (0).
■Precautions
When this command has been set to Enable (1), do not execute the following operations. An incorrect value may be stored in
the non-volatile memory.
• Changing a set value in a buffer memory area
• Memory backup ( Page 123 Buffer Memory Data Backup Function)
• Default setting registration ( Page 166 Default setting registration command)
• Changing the value to Disable (0) during the auto tuning
CH1
547
63
Buffer memory address
Un\G431
Un\G431
Un\G439
Un\G432
Un\G433
Un\G537
CH2 CH3
747 947
95 127
Reference
Page 245 CH1 Proportional band (P) setting
Page 247 CH1 Heating proportional band (Ph)
setting
Page 251 CH1 Cooling proportional band (Pc)
setting
Page 247 CH1 Integral time (I) setting
Page 248 CH1 Derivative time (D) setting
Page 289 CH1 Loop disconnection detection
judgment time
Appendix 3 Buffer Memory Areas
CH4
1147
159
A
APPX
297