Chapter
1
1-1
Understanding Your System
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Terms used in this chapter 11
Designing systems 12
Preparing your functional specification 13
Identifying Classic PLC5 processor features 15
Using the Classic PLC5 processor as a remote I/O scanner 18
Using the Classic PLC5 processor as a remote I/O adapter 19
Become familiar with the following terms and their definitions.
Term Definition
Processorresident
local I/O chassis
the I/O chassis in which the PLC5 processor is installed
Processorresident
local I/O
I/O modules located in the same chassis as the PLC5 processor
Remote I/O link a serial communication link between a PLC5 processor port in scanner
mode and an adapter as well as I/O modules that are located remotely
from the PLC5 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 PLC5
processor in scanner mode
Discretetransfer data data (words) transferred to/from a discrete I/O module
Blocktransfer data data transferred, in blocks of data up to 64 words, to/from a block
transfer I/O module (for example, an analog module)
Using this Chapter
Understanding the Terms
Used in this Chapter
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