Mitsubishi Electric R60AD8-G - Page 164

162
APPX
Appendix 3 Buffer Memory Areas
CH1 Latest pointer
The buffer memory address of the latest data in 'CH1 Logging data' (Un\G10000 to Un\G10999) can be checked with this
buffer memory area.
The offset value counted from the start address of 'CH1 Logging data' (Un\G10000 to Un\G10999) is stored.
■Buffer memory address
The following shows the buffer memory address of this area.
•CH Latest pointer
•CH Latest pointer (in Q compatible mode)
Ex.
When the value of CH2 Latest pointer (Un\G635) is 549
• 'CH1 Latest pointer' (Un\G435) increases one by one each time data is stored from beginning of the logging.
• When 'CH1 Logging hold request' (Un\G471) is turned on and off, 'CH1 Latest pointer' (Un\G435) is cleared
to 0.
CH1 Number of logging data
The number of data stored in the logging data storage area can be checked during the logging.
'CH1 Number of logging data' (Un\G436) increases one by one each time data is stored from beginning of the logging.
When the value in the logging data storage area reaches 1000, 'CH1 Number of logging data' (Un\G436) is fixed to 1000 since
the value is overwritten from the head again.
For details on the logging function, refer to the following.
Page 61 Logging Function
■Buffer memory address
The following shows the buffer memory address of this area.
•CH Number of logging data
•CH Number of logging data (in Q compatible mode)
When 'CH1 Logging hold request' (Un\G471) is turned on and off, 'CH1 Number of logging data' (Un\G436) is
cleared to 0.
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12 CH13 CH14 CH15 CH16
435 635 835 1035 1235 1435 1635 1835 2035 2235 2435 2635 2835 3035 3235 3435
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12 CH13 CH14 CH15 CH16
1098 1099 1100 1101 1102 1103 1104 1105 
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12 CH13 CH14 CH15 CH16
436 636 836 1036 1236 1436 1636 1836 2036 2236 2436 2636 2836 3036 3236 3436
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12 CH13 CH14 CH15 CH16
1106 1107 11 08 1109 1110 1111 1112 1113 
11549 = 11000 + 549
CH2 Logging data
Latest pointer: 549
(offset value from Un\G11000)
Un\G11000
Un\G11549
Un\G11550
Un\G11999
The oldest data
The latest data