Publication 20D-UM002C-EN-P - November 2003
Placing and Configuring Local I/O 4-11
When you configure an I/O module, it defaults to being not inhibited. You
can change an individual module’s properties to inhibit a module.
Even if you inhibit an I/O module, the FlexBus still scans the module each
scan sequence.
You can only inhibit an I/O module if you configured the module to operate
with a direct connection. On the Connection tab of the module properties in
the programming software, you can select to inhibit that specific module.
To inhibit a rack-optimized connection, you must inhibit the DIN rail, which
in turns inhibits all the modules on that rail, whether configured for
rack-optimized or direct connections.
When you inhibit a communication module, such as a 1788-CNC
communication card, the controller shuts down the connections to the
communication card and to all the modules that depend on that card.
Inhibiting a communication module lets you disable an entire branch of the
I/O network.
ATTENTION
!
Inhibiting a module causes the connection to the module to
be broken and prevents communication of I/O data. The
controller and other I/O modules continue to operate
based on old data from that module. To avoid potential
personal injury and damage to machinery, make sure this
does not create unsafe operation.
