Allen-Bradley Compact I/O 1769-ADN DeviceNet, Руководство пользователя

Страница: 49 / 204

Publication 1769-UM001B-EN-P - October 2002
How Communication Takes Place and I/O Image Table Mapping 2-25
Factory defaults (for size) set I/O sizes to the maximum amount of I/O
data for a module to provide maximum functionality. You can change
the I/O data size for a module by reducing the number of words
mapped into the adapter module.
The real-time settings option provides optimal real time data to and
from the I/O module over the network. You need a software
configuration tool to change the size. The real time settings provide
the fastest network time by only mapping the points or channels for
the I/O modules. Status and output echo information, if available in
the input data from a module, is not included.
The software configuration tool selects the factory defaults as default
values when a module is added to the configuration.
Factory default for the adapter (out-of-the-box configuration) is no
devices in the Compact I/O system. Until the Compact I/O system is
configured with the software, no I/O connections can be made. For
more information, refer to
Configuring Your Compact I/O Series A
DeviceNet Adapter
in Chapter 3 or
Configuring Your Compact I/O
Series B DeviceNet Adapter in Chapter 4.
1769-IR6 RTD/Resistance Input
Module 8 0 6 0
1769-IF4XOF2 Combination Analog
Module 8 0 6 0
1769-HSC High-Speed Counter
Module 35 34 35 34
Module defaults for I/O size: Factory defaults
(words)
Real time setting
(words)
Description Input Output Input Output
Allen-Bradley