User Manual

Historian Package for W INTERPRET (T3832)
PD - 6042 March, 06 19
Figure 10 . Limits on Number of Variable Entries and Frames.
Size of the Process Historian Function Block
The Process Historian function block is slightly larger than
the size of the historical buffer calculated above. The
equation below is used to calculate the overall size of the
function block.
FB Size = 36 + (4 * Qty
TOTAL
) + Buffer Size
Where:
FB Size = Size of Process Historian
function block
Qty
TOTAL
= Number of process variables
defined in function block regardless
of data type
Buffer Size = Size of Historical Buffer calculated
above