
Analog Input Modules
(T7420A, AF)
14
Industrial Control Services
Keying
The I/O chassis can be physically keyed to prevent accidental
damage caused by inserting a module into a slot wired for a
different module type. Figure
7
illustrates how the slot keys
are installed on the I/O chassis slot field wiring connectors.
The slot key positions for the analog input modules are listed
in Table
4
.
Figure
7
. Installing Slot Keys.
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