Phoenix Contact 2701030 NLC-050-024D-06I-04QTN-00A nanoLine Base Unit 24ßV/DC / NPN 2701030 Data Sheet

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2701030

Data Operations

2373_en_B

PHOENIX CONTACT

5-9

5.4

Using the Move Block

The purpose of the Move block in a flow chart is to write data from one variable to another.

Mathematically, a move data operation is the same as an assignment statement:

MOVE from Data Item A to Data Item B, or

Let B = A

It is important to see the move as an assignment operation or copy because the move is

non-destructive. That is, moving data from A to B does not clear A. A still has its original

value, but B has a new value equivalent to A.

5.4.1

The Move Expression

The Move block is a specialized control block in flow chart design because it does a specific

kind of action. Double-click the block (or right-click and select “Block Configuration” from the

pop-up menu) to display the “Move Block” dialog box (see Figure 5-1).

Figure 5-1

“Move Block... Configuration” tab

The dialog box is partitioned into the “From” and “To” groups. Complete the “From” data

fields before completing the “To” data fields. nanoNavigator automatically presents only the

valid data types in the “To” group based on the data type selected in the “From” group.

For readers who are more accustomed to using Load and Out instructions in accumulator-

based controllers, just think of the Load-Out combination as the Move block.