Allen-Bradley POINT I/O PROFIBUS 1734-APB, Руководство пользователя, Страница: 12 / 88

Publication 1734-UM005B-EN-P - June 2001
1-2 What is the PROFIBUS Adapter
Communicating through the Adapter
Output data is sent from the master across the PROFIBUS network to
the 1734-APB adapter. The adapter automatically transfers the data
across the PointBus backplane to the output modules.
Inputs from the input modules are collected by the PROFIBUS adapter
via the backplane and sent across the PROFIBUS network to the
master.
I/O Module Removal and Insertion Under Power
I/O modules can be removed under power from their positions in the
backplane without interfering with the communication with the other
modules. When reinserting the removed module, communication is
automatically started up again if the following criteria is fulfilled:
1. The inserted module is the same type as the one removed.
2. If more than one module is removed, communication will not be
regained until all modules are inserted in their correct positions
again.
Startup Procedure
Starting the adapter module consists of:
•
Installing the adapter in the system
•
setting the adapter node address
•
configuring the adapter for PROFIBUS communication
•
configuring the I/O modules for PointBus communication
Set the Adapter Node Address
Set the node address using the 2-position thumbwheel switch. Valid
settings range from 01 to 99. Use a pen to press either the + or –
buttons to change the number.
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