A cycle is complete, if all used and successive instructions have been processed. Then the
processing cycle is started again (write output buffer, update input buffer, index 1, index 2, …).
The processing time of each instruction is approx. 1 ms.
Additionally, 1 ms is required for writing the output signals 24xx/25xx and reading of input sig-
nals 20xx/23xx.
As a result, the cycle time is the total of instructions + 1 in milliseconds.
2.2 Creating a program with function blocks
2.2.1 Starting VPLC
In PC software VPlus click on button to start the editor for VPLC function blocks.
In menu Edit/VPLC settings, select the language for the user environment and the menu com-
mands.
2.2.2 Saving a file
Click button to save the function block program as a VPLC file.
2.2.3 Function block (instruction)
Drag the required function blocks from the library into the editor window.
− Double-click the function block in order to set up an index for the function block.
− The function blocks are processed in the order of the indices.
− Wrong numbering will be reported by the syntax check
.
− Depending on the function block, different settings are possible in fields P1 and P2.
2.2.4 Wire
Using the wire tool to combine the blocks with one another in the editor.
− Use wire to connect the blocks for inputs and outputs to function blocks.
− Use wire to combine the function blocks with one another.
It is not possible to connect the connections of function blocks or inputs and outputs by arrang-
ing them on behind the other.
Correct connection Incorrect
− If the wire is shown in grey after the combination, the combination must be checked.
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