Click datalink to define a filter that performs the specified
operation between the incoming data and the value in the specified
datalink and places the result in the datalink. The data in the
current blob is always the first operand in the equation,
as in: current blob data operation datalink. If the SFM is unable
to perform the specified operation, the filter fails.
Table 3-6: Datalink
filter keys
Field (key)
|
Description
|
|---|
Datalink
|
The datalink with the value you want
to manipulate with this filter. The datalink you select for this
type of filter operation must have a numeric datatype.
In effect, this option uses the data coming into the filter to operate
in some way on the specified datalink, and place the result in the
datalink.
Click the down-arrow to the right of the field to select the
name from a list of existing datalinks. Click the ellipsis button
to open the Datalink Information window to define a new datalink.
|
Operation
|
Select the operation to perform on the
selected datalink from the drop-down list of operations.
|
Operation action
Datalink types
|
Datalink operation
|
Add the input to the datalink.
string, char, blob, float, long, int, short, decimal
|
Add
|
Subtract the input from the datalink.
char, float, long, int, short, decimal
|
Subtract
|
Multiply the datalink by the input.
char, float, long, int, short, decimal
|
Multiply
|
Divide the datalink by the input.
char, float, long, int, short, decimal
|
Divide
|
Add 1 to the datalink.
char, float, long, int, short, decimal
|
Increment
|
Subtract 1 from the datalink.
char, float, long, int, short, decimal
|
Decrement
|
Place the input into the datalink.
string, char, blob, float, long, int, short, decimal
|
Set
|
Clear the datalink value to zero.
string, char, blob, float, long, int, short, decimal
|
Clear
|
Perform a modulus operation on the input
by the datalink.
char, long, int, short
|
Modulus
|
