FEATURES
1-3
Hardware
and Installation User Manual
You
may use a DEC
VAX
Computer
to
develop an RLL program that can be
transferred
to a TI525/TI535 PLC with a VPU. Y
ou can provide communication
between
devices through the TIW
A
Y industrial local area network.
See the references listed in the Preface of this manual for information
on these systems.
I/O control for the Series 505 takes place through individual Series 505 I/O
modules. A full line of discrete, analog, word, and intelligent I/O modules are
available that can handle almost any input or output specifications. These I/O
modules are rugged, plug-in devices capable of functioning in harsh
environments.
I/O modules are grouped into local and distributed I/O categories depending
upon
their physical location. The local I/O consists of those modules installed
in
the
same base assembly as the PLC. The TI525–1
102 can support up to 512 local
I/O points. You can create a distributed I/O system for all other models by
connecting up to 14 additional base assemblies. All current versions of the
TI525 and TI535 PLCs support up to 1023 I/O points, in both local and
distributed
bases.
When
additional bases
are connected to the system, distributed I/O is managed
through
communication between base controllers — the I/O Channel Controller
(IOCC) and one or more Distributed Base Controllers (DBC). The DBC
(PPX:505–6840)
in each distributed base assembly transmits data from the I/O
modules
in that base assembly to the IOCC (PPX:505–6830) , which occupies the
same
base assembly as the PLC. Y
our
TI525/TI535 PLC can address distributed
bases
up to 1300 feet (396m) away
.
A diagram of the TI525/TI535 system which shows the functional relationship
of all the system components is shown in Figure 1-2.
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