Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual - Manual (Page 11)

Chapter
1
1-1
Understanding Your System
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Terms used in this chapter 1Ć1
Designing systems 1Ć2
Preparing your functional specification 1Ć3
Identifying Classic PLCĆ5 processor features 1Ć5
Using the Classic PLCĆ5 processor as a remote I/O scanner 1Ć8
Using the Classic PLCĆ5 processor as a remote I/O adapter 1Ć9
Become familiar with the following terms and their definitions.
Term Definition
ProcessorĆresident
local I/O chassis
the I/O chassis in which the PLCĆ5 processor is installed
ProcessorĆresident
local I/O
I/O modules located in the same chassis as the PLCĆ5 processor
Remote I/O link a serial communication link between a PLCĆ5 processor port in scanner
mode and an adapter as well as I/O modules that are located remotely
from the PLCĆ5 processor
Remote I/O chassis the hardware enclosure that contains an adapter and I/O modules that
are located remotely on a serial communication link to a PLCĆ5
processor in scanner mode
DiscreteĆtransfer data data (words) transferred to/from a discrete I/O module
BlockĆtransfer data data transferred, in blocks of data up to 64 words, to/from a blockĆ
transfer I/O module (for example, an analog module)
Using this Chapter
Understanding the Terms
Used in this Chapter