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Chapter 2
Installing the Hardware and Software
2-6
ni.com
Connecting Terminal Bases with DIN Rail Mounting
Follow these steps to connect a terminal base to an FP-20
xx
network
module using DIN rail mounting.
Caution
To avoid damaging the FP-20
xx
and the terminal bases, make sure that power
is
not
applied to it while you install or remove terminal bases.
1.
Mount the terminal base onto the DIN rail in the same way you
installed the network module.
2.
Attach the terminal base to the FP-20
xx
by firmly mating the local
bus connectors. Be careful not to bend any pins.
3.
To add more terminal bases, install them on the rail and connect their
local bus connectors together. In most cases a single FP-20
xx
can support up to nine terminal bases, depending on the power
consumption of the I/O modules. Refer to the
section for more information about power
requirements.
4.
Place the protective cover onto the local bus connector of the last
terminal base on the bank, as shown in the following figure. Add
the rail locks by sliding them on and tightening the screws.
Removing the FP-20
xx
and Terminal Bases
from the DIN Rail
Remove an I/O module from its terminal base before lifting the terminal
base off the rail. To remove an FP-20
xx
network module or terminal base,
unlock it from the DIN rail by placing a screwdriver in the slot on the rail
clip and opening it to the unlocked position. After you disconnect the
network module from the local bus connector of the terminal base, you can
lift it off the rail.