If you drop the SF_Antivalent FB on an input terminal, the FB is inserted before the input termi-
nal.
• If you select a FB or FUN (in this example, SF_Antivalent) from the right-click menu, the FUN or
FB is inserted at the location shown below.
a)
Before the FB is inserted, the network is as shown below.
b) When the SF_Antivalent is selected from the right-click menu, the network is as shown below.
Deleting a FUN or FB
Use one of the following procedures to delete a FUN or FB.
Method Operation
Method 1 Right-click the FUN or FB on the FBD network and select Delete from the menu.
Method 2 Select the FUN or FB on the FBD network and press the Delete Key.
Replacing a FB or FUN
You can replace a FUN or FB with a different instruction without changing the input and output param-
eters. Use one of the following procedures.
Method Operation
Method 1 Drag the FUN or FB to change to in the Toolbox to the FUN or FB in the FBD editor.
Method 2 Select the FUN or FB name on the FBD network and directly enter the FUN or FB name.
• Before the FB is edited, the network is as shown below.
6 Programming
6 - 47
NX-series Safety Control Unit User's Manual (Z930)
6-5 Programming Operations
6
6-5-4 FBD Programming
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