
Analog Input Modules
(T3420A, AF)
24
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
14
illustrates how the slot keys
are installed on the I/O chassis slot field wiring connectors.
The slot key positions for the analog input m
odules are listed
in Table
5
.
Figure
14
. Installing Slot Keys.
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