Omron SYSMAC C Series User Manual

Introduction to programming
Step 2
Assigning I/Os
CPU (28 points)”
iN | OUT
OCH] 5CH
CPU (28 points)*
+ I/O expansion unit (28 points)*
CPU (28 points)*
+ I/O expansion unit (56 points)*
CPU (28 points)*
+ I/O expansion unit (28 points)*
+ VO link unit (32 points)
CPU (28 points)*
+ 1/0 expansion unit (56 points)*
+ 1/0 link unit (32 points)
1CH | 6CH
aaa
N | OUT
CPU (28 points)*
+ two I/O expansion units (56 points)”
Note:
*When the system is configured of AC
input type units, the number of 1/0
points per system is decreased as
follows:
28-point system — 26 points
56-point system — 52 points
Points and channels
The programmable controllers of the SYSMAC C-Series all use the
concept of I/O channels to identify individual I/O terminals, or points.
Each of these channels consists of 16 points.
The four-digit number used to identify an I/O point therefore can be
broken down into the left-hand two digits, which identify the channel, and
the right-hand two digits, which identify the point within the channel.
For example, “0000” identifies the first point of the first channel and
"0104" identifies the fifth point of the second channel. In the C20, the first
five channels (00 to 04) are used for input and the next five (05 to 09) for
output.
The actual number of points used by the basic C20 is 16 (00 to 15) inputs
and 12(00 to 11) outputs.
Remember that the:C20 can be expanded by adding expansion I/O units.
Up to four new channels can be added for a total of 80 (5x16) input and
60 (5x12) output points.
V0 channel assignment
The assignment of I/O channels is as shown on the left.
The total number of I/O points, including those of an I/O link unit, cannot
exceed 140.
Assigning internal auxiliary relays
In
the
output
channel,
the
four
points
(12
to
15)
that
are
not
used
to
send
output
signals
directly
to
output
devices
function
as
internal
relays.
If
these
internal
relays
are
to
be
used,
they
must
be
assigned
as
well
during
Step
2.
How
they
function
is
explained
next.
These relays do not contro! external devices directly. Instead, they are
used as data memory or data process areas in controlling other relays,
timers and counters. Functionally, these internal auxiliary relays are
equivalent
to
the
internal
relays
used
in
relay
control
panel.
This
is
known
as “internal output.”

Omron SYSMAC C Series Specifications

General

Brand	Omron
Model	SYSMAC C Series
Category	Controller
Language	English