LSIS XGT Series - Trigger Sample Block Calculation

Chapter 11 Datalog Function
11-49
11.5.2 Trigger Sample Block Calculation
During Trigger Save, data collection progresses for each sample block. Sample block refers to the unit of collected data
set by the datalog parameter, where sample refers to each data value. The number of trigger sample blocks and the total
number of samples are calculated as follows.
No. of sample blocks = Trigger Buffer Space1) / {(No. of set data2) * size of set data3)) +(RTC data size4))}
No. of stored samples = sample block * No. of set data
(1) Trigger Buffer Space: 64KB ~ 2,048KB /Group
(2) No. of Set Data 64 (Maximum)
(3) Size of Set Data
Unit: Byte
Data Type Data Size
BOOL 1
BYTE 1
WORD
2
DWORD 4
LWORD
8
INT 2
SINT 1
DINT 4
LINT
8
UINT 2
USINT 1
UDINT 4
ULINT 8
REAL 4
LREAL 8
STRING
32
Ex)
- Set the buffer memory: 128KB
- Number and type of setting data: 64 (BYTE)
Max. No. of sample blocks that can be set:
131,072 / { (64 * 1) + 29 } = 1409 sample blocks
(4) RTC size of data: 29 (fixed value)