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5.6.1

Inserting the Fieldbus Coupler/Controller

When replacing the fieldbus coupler/controller for an already available

fieldbus coupler/controller, position the new fieldbus coupler/controller so

that the tongue and groove joints to the subsequent I/O module are engaged.

Snap the fieldbus coupler/controller onto the carrier rail.

Use a screwdriver blade to turn the locking disc until the nose of the locking

disc engages behind the carrier rail (see the following figure). This prevents

the fieldbus coupler/controller from canting on the carrier rail.

With the fieldbus coupler/controller snapped in place, the electrical connections

for the data contacts and power contacts (if any) to the possible subsequent I/O

module are established.

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Figure 28: Release Tab Standard Fieldbus Coupler/Controller (Example)

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