Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 149

CH1 Trigger pointer
The buffer memory address of the data of when a hold trigger is executed in CH1 Logging data (Un\G10000 to Un\G19999)
can be checked with this buffer memory area.
The difference between the address of buffer memory which stores the data of when a hold trigger is executed and the start
address in CH1 Logging data (Un\G10000 to Un\G19999) is stored.
For details on the logging function, refer to the following.
Page 59 Logging function
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
CH Trigger pointer
CH Trigger pointer (In FX3 allocation mode
function)
■Default value
The default value is 0 for all channels.
When 'CH1 Logging hold request' (Un\G471) is turned onoff, 'CH1 Trigger pointer' (Un\G437) is cleared to
0.
CH1 Current logging read pointer
Each time an amount equivalent to the logging read points monitor value is logged, a value calculated by the following formula
is stored.
CH1 Current logging read pointer = CH1 Latest pointer - CH1 Logging read points monitor value + 1
For details on the logging function, refer to the following.
Page 59 Logging function
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
CH Current logging read pointer
CH Current logging read pointer (in FX3
allocation mode function)
■Default value
The default value is -1 for all channels.
CH1 Previous logging read pointer
At the time of generating an interrupt to the CPU module, the current logging read pointer just before the update by the
interrupt is stored.
For details on the logging function, refer to the following.
Page 59 Logging function
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
CH Previous logging read pointer
CH Previous logging read pointer (in FX3
allocation mode function)
■Default value
The default value is -1 for all channels.
CH1 CH2
437 637
9061 9062
CH1 CH2
438 638
9241 9242
CH1 CH2
439 639
9251 9252
CH3 CH4
837 1037
9063 9064
CH3 CH4
838 1038
9243 9244
CH3 CH4
839 1039
9253 9254
Appendix 4 Buffer Memory Areas
A
APPX
147