1 Publication 1747-UM006B-EN-P - June 2003
Chapter
1
Overview
This chapter presents:
• 1747-ASB module overview
• remote I/O overview
• compatible devices
• 1747-ASB module features
• setup and operational overview
1747-ASB Module
Overview
The 1747-ASB module is an SLC 500 single-slot, RIO communication
link module. It occupies the first slot (slot 0) of a 1746 remote chassis,
where the SLC processor normally resides.
The 1747-ASB module is an adapter, or slave, on the RIO link, and the
master of the remote chassis and remote expansion chassis it is
installed in. Remote expansion chassis are optional. It acts as a
gateway between the scanner and the I/O modules residing in the
remote chassis and remote expansion chassis. The 1747-ASB module
maps the image of the I/O modules in its remote chassis and remote
expansion chassis directly to the SLC or PLC processor image.
Output data is sent from the scanner of either the SLC or PLC local
chassis to the 1747-ASB module across the RIO link. This data is
automatically transferred to the output modules across the chassis
backplane by the 1747-ASB module. Inputs from the input modules
are collected via the backplane by the 1747-ASB module and sent
back to the scanner across the RIO link. No user programming of the
1747-ASB module is necessary.
1747-ASB Module1747-ASB Module
1747-ASB Module
1747-ASB Module
Remote Chassis
Remote Chassis
Remote Chassis
Remote Expansion Chassis
Outputs to
Modules
Inputs to
Modules
RIO Link
Supervisory SLC (or PLC)
Remote Expansion Chassis
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