Mitsubishi Electric MELSEC iQ-R Series User Manual page 220

■Timing of turning ON/OFF of this flag to 'CH1 Memory's PID constants read command'
(Un\G440)
The following figure shows the timing of turning ON/OFF of this flag to 'CH1 Memory's PID constants read command'
(Un\G440). (For CH1)
'CH1 Memory's PID constants read
command' (Un\G440)
CH1 Read completion flag
(Un\G46, b0)
CH1 Read failure flag
(Un\G46, b8)
After reading of data from the non-volatile memory has been completed successfully, CH1 Read completion flag (Un\G46, b0)
turns OFF when 'CH1 Memory's PID constants read command' (Un\G440) turns from ON to OFF.
After reading of data from the non-volatile memory has been completed successfully, CH1 Read completion flag (Un\G46, b0)
turns ON.
When reading of data from the non-volatile memory has failed, CH1 Read failure flag (Un\G46, b8) turns ON and the
temperature control module operates with the PID constants before reading of the data (The LED status remains.).
CH1 Read failure flag (Un\G46, b8) turns OFF after reading of data in the channel 1 is completed successfully.
When reading of data has failed, turn OFF and ON 'CH1 Memory's PID constants read command' (Un\G440) to read the data
again.
Memory's PID constants write completion flag
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 Automatic backup setting after auto tuning of PID constants' (Un\G547) ( Page 297 CH1 Automatic backup
setting after auto tuning of PID constants)
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
Memory's PID constants write completion flag
■Correspondence between each bit and flag
The following table shows the correspondence between each bit in this buffer memory area and each flag.
Bit No.
b0
b1
b2
b3
APPX
218
Appendix 3 Buffer Memory Areas
0 1 0
ON
OFF
OFF
Read completion
Executed by the temperature control module
Details of flag
CH1 Write completion
CH2 Write completion
CH3 Write completion
CH4 Write completion
1 0
ON
Read failure
CH1 CH2
47
Bit No.
b8
b9
b10
b11
1 0
ON
Read completion
CH3 CH4
Details of flag
CH1 Write failure
CH2 Write failure
CH3 Write failure
CH4 Write failure