Network Features - Omron C200HW-SRM21-V1 - 08-2007 Operation Manual

System Overview and Features
1-1-2

Network Features

Communications Modes
Flexible Wiring Up to
200 m
Long-distance
Communications Up to
500 m
High-speed
Communications
Water-resistance Slaves
Reduced Wiring
Input Slave
CPU Unit's I/O Area
Word Bit
00 to 07
CIO
2000
08 to 15
CIO 00 to 07
2001
08 to 15
OUT
00 to 07
CIO
data
2002
08 to 15
to
to
00 to 07
CIO
2007
08 to 15
00 to 07
CIO
2008
08 to 15
00 to 07
CIO
2009
08 to 15
IN
00 to 07
data
CIO
2010
08 to 15
to to
00 to 07
CIO
2015
08 to 15
Example settings using CJ1W-SRM21 Master
Unit with unit #00, connected to 32 Slaves.
The CompoBus/S has the following features.
Select either a High-speed Communications Mode or Long-distance Commu-
nications Mode for the CompoBus/S according to the system configuration.
The differences between the High-speed Communications Mode and the
Long-distance Communications Mode are described in 1-1-3 Communica-
tions Modes.
In Long-distance Communications Mode, flexible wiring is possible up to a
total cable length of 200 m with no restrictions on branching or node connec-
tions, provided that 4-conductor VCTF cable or Special Flat Cable is used.
In Long-distance Communications Mode, communications over the main line
of up to 500 m are possible to control I/O devices in a wide area, provided that
2-conductor VCTF cable is used. In this case, however, each branch line can
be connected to a single Slave only, because the branch line cannot be fur-
ther branched. Furthermore, the Master must be connected to either end of
the main line.
In High-speed Communications Mode, up to 16 Slaves with 128 I/O points
can be connected with a high-speed communications cycle time of only
0.5 ms. This cycle is fast enough for time-critical factory automation applica-
tions.
Water-resistant Terminals (IP67) can be used as Slaves to exchange I/O in
places exposed to water. Water-resistant Terminals are, however, available
only when the communications cable is 4-conductor VCTF cable.
A Slave can be connected to a Master or another Slave with just one connect-
ing cable. If the 4-wire Special Flat Cable or 4-conductor VCTF cable is used,
the Slave's communication power supply is also supplied through the cable,
so floor wiring can be reduced dramatically. Also, special connectors simplify
branching from a main cable.
Output
Node number
OUT node 0
00
8-point Output Slave
01
02
03
OUT node 2
04 16-point Output Slave
05
to OUT node 4
8-point Output Slave
14
Input
15
IN node 0
00
8-point Input Slave
01
02
03
04
05
IN node 2
to
32-point Input Slave
14
15
IN node 14
16-point Input Slave
Section 1-1
IN/OUT node1
8-point Input/
8-point Output
Slave
3