7.2.8. Extensions Tab
The Extensions Tab allows you to extend or “slave” single or multiple zones to one “master” zone. An
example situation could be that you have for example certain length zones and on a given conveyor line
there is a need for an extra partial zone that is too short to be a functional zone that accumulates a carton,
but at the same time it is long enough that mechanically you need to have an MDR in that zone. In this
situation you would like to provide a module and an MDR but no sensor and you want this zone to run its
MDR when either its adjacent upstream or downstream zone is also running. In essence you want to make
this partial zone a logical extension to one of its neighbors.
Example for Using Extensions for a Lift Gate
A common use of the Extension mode configuration available from the Connections tab selection is for a
powered lift gate. In this example the module on the lifting or gate portion of conveyor has an MDR and no
photo-sensors. Normal operation when the gate is down is for the MDR on the gate to run when its
immediate downstream zone runs so as to create “one long logical zone”. This means that if a carton is
accumulated on the upstream zone of Node 192.168.21.23; a carton arriving at the downstream zone of
Node 192.168.21.21 will stop and accumulate and no loads will ever be logically accumulated or stopped on
the gate portion. In order to accomplish this, all we need to do is instruct Node 192.168.21.22 to be an
Extension of its downstream neighbor Node 192.168.21.23
Lift Gate Example
PULSEROLLER ConveyLinx-Ai2 User's Guide - 1.7
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