Publication 1747-UM011G-EN-P - June 2008
236 Control Networks
ControlNet Network
ControlNet systems are designed to:
• provide high-speed, repeatable, deterministic I/O transmission.
• let control and message information co-exist on the same physical
media.
• make sure that I/O data transfers are not affected by programming
terminal activity or interscanner message activity on the network.
The 1747-SCNR ControlNet Scanner Module
The 1747-SCNR scanner provides the capability for SLC processors to
produce or consume scheduled I/O to and from a ControlNet network.
Scheduled messaging lets the SLC processor program control I/O events in
real time over the ControlNet network. The module connects to a ControlNet
network via the standard BNC connectors.
The 1747-KFC15 ControlNet Messaging Module
The 1747-KFC15 module provides the capability for SLC 5/03 and later
processors to send or receive unscheduled ControlNet messages. With
unscheduled messages, the SLC processor program can send peer-to-peer
messages or be accessed and edited over the ControlNet network using
RSLogix 500 software.
The 1747-KFC15 module connects to the ControlNet network via the
standard BNC connectors and links to the SLC processor via a standard
RS-232 cable. Other programming interfaces can connect to the ControlNet
network through the 1747-KFC15 module’s network access port.
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