QTS QTS-CLX-PVX, Руководство пользователя

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Page
12 QTS-
CLX-PVX September 2009
8. Set the Connection Parameters as shown above. Click OK.
9. Next set the RPI.
10. Click OK to accept the module
Selecting an RPI.
The module supports RPIs from 0.2 to 750.0 ms. The default RPI is 5 ms.
Select an RPI appropriate to the I/O bus scan time and to your process. It makes no sense
to use an RPI that is much faster than the bus or process update time. Typical RPIs are
from 100 to 150 ms.
Remote Connections
If you are using the QTS-CLX-PVX in a remote chassis, for example a chassis connected
to the controlling ControlLogix processor over Ethernet or ControlNet, it may be
necessary to increase the RPI, as the intermediate network may not have sufficient
bandwidth to support faster updates (small RPIs).
I/O Data Mapping
The configuration program (see page 14) maps the I/O data to ControlLogix tags.
The configuration program creates aliases to I/O data that you can import into RSLogix
5000 to access I/O data. The alias names address data by file, card and channel.
Use these aliases to access data in any applications you develop. If the mapping changes,
you simply re-import aliases and the application accesses the correct I/O location. The
configuration program also creates aliases to diagnostic data which is not easily
accessible other than by using the aliases.