FANUC Robotics America GFK-1535A User Manual

Page 60

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VersaMax™ System Genius® Network Interface Unit User's Manual – November 2000

GFK-1535A

4

Autoconfiguring an I/O Station with Expansion Racks

S

The Expansion Receiver modules must have their rack ID selection dials set
correctly. Any available rack number can be used for a new expansion rack but
they must all be unique (no duplicate rack numbers). It is best to assign
expansion racks numbers from lowest (1) to highest (7) as they are installed.

S

If a new expansion rack is added in the future, it should be assigned a rack
number that is higher than the racks that are already installed. If a new
expansion rack with a lower rack number is added and the system is then auto-
configured, the racks numbered higher than the new rack number have their I/O
reference addresses shifted in the reference tables. Any existing program logic
using those references would need to be adjusted to use the new references.

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When autoconfiguring an I/O Station with expansion racks, either all racks
must be powered from the same source or the expansion racks must be powered
up before the main rack.

S

To add another expansion rack to the I/O Station, the I/O Station must be
powered down. After adding the expansion rack, power up the I/O Station. It
will then autoconfigure.

S

To force autoconfiguration for expansion racks, first power down the NIU.
Remove the transmitter module from the NIU or remove the expansion cable at
the transmitter. Power up the NIU and let it autoconfigure. Power the NIU
down again, reattach the transmitter or cable and power up the NIU again.

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