7 Programming
7 - 26
NX-series Safety Control Unit User’s Manual (Z930)
Incorrect Connection Configurations
You cannot connect more than one instruction or user-defined function block to the right of another
instruction or user-defined function block. In this case, you must pass the signal to a variable as
shown in the following figure.
You cannot route a connecting line from the output to the input. In this case, you must pass the sig-
nal to a variable as shown in the following figure.
FB2
FB3
FB1
FB2
FB3
FB1
Var1
Var1