Unication Messenger m90 Bedienungsanleitung PDF herunterladen (Seite 181)

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101

Ladder

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4. Click to place the function block. The Select Operand and Address dialog box opens.

5. Enter the Operands and Addresses in the dialog boxes and click OK.

6. The Compare function block appears with the selected Operands and Addresses.

Logic Function

You perform logical functions in U90 Ladder by using logic function blocks. Function blocks

are provided for:

AND

XOR

The internal operation of a function block is transparent to the user. You input the two

operands. The result is automatically output by the function block

Input Operands A & B must be integer values: MI , SI or # constant integer value.

Output Operand C may be a Memory Integer or a System Integer.

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