Communication concepts chapter 2 – Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual User Manual
Page 15
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Communication Concepts
Chapter 2
2-3
Figure 2.1
Data Highway Network
PLC-3
Processor
1775-KA
Module
Computer
MODEM
Advisor 2+
MODEM
1770-KF2
Module
1770-KF2
Module
1770-KF2
Module
1771-KA
Module
PLC-2/15
Processor
PLC-4
Loop
1771-KG
Module
PLC-2/30
Processor
1773-KA
Module
11299A
MODEM
Link
RS-232-C Link
50 Cable-Ft. Max.
Data
Highway
Link
RS-232-C Link
50 Cable-Ft. Max.
TM
Stations
A station consists of a computer or PC processor and the module or
modules that interface it with the Data Highway link. Within a station
that contains a KF2 module, an asynchronous link is required as an
auxiliary link to the network. Figure 2.1 shows three such stations.
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