ABB AC500 Introduction Manual page 103

Double click the object "PLC Configuration". If the AC500 folder in the PLC configuration tree is closed,
click on the symbol.
First the I/O devices connected directly to the I/O bus of the CPU will be entered: Click on "I/O-Bus[FIX]"
and then press the right mouse button.
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Introduction to AC500 1-101
AC500 / Issued: 07.2006