OPERATION MANUAL CompoBus/S

Compatible Devices Section 1-3
Cables CompoBus/S communications are transmitted through Special Flat Cable or
4-conductor VCTF cable. The communications power supply can be supplied
through either of the cables.
Connection Methods Two methods can be used to connect the CompoBus/S Master and Slaves:
the T-branch method and the multidrop method. With the T-branch method,
the Slave is connected to a line that branches off from the communications
cable wherever desired. With the multidrop method, the Master or Slave is
connected directly to the communications cable. These two connection methods
can both be used in the same system and it is possible to make a secondary
branch from a branch line. Use OMRON’s Branch Connector for Special
Flat Cable, a T-joint for a shielded connector, or a commercially available terminal
block to create a branch from the communications cable.
Terminator A terminator must be connected to the end of the communications cable farthest
from the Master in order to stabilize communications. There are three
kinds of terminating resistors available, a connector for use with Special Flat
Cable, a terminal block, and a shielded connector. In a system in which distinguishing
between the main and branch lines is not necessary, only a single
terminator farthest from the Master is required regardless of the position the
Master is connected to the communications cable.
1-3 Compatible Devices
1-3-1 Compatible Masters
Masters with
Communications
Functions
10
PLC C200HX-CPU3@-
(Z)E/ CPU4@-(Z)E,
C200HG-CPU3@-
(Z)E/CPU4@-(Z)E,
C200HE, C200HS
Master
Unit
Communications
mode
Analog I/O
Terminal
connection
Max. number
of Masters
Master
Unit
mounting
location
There are three types of Master Units which can be used in CompoBus/S
Systems. The model of the Master Unit which must be used depends on the
PLC being used.
C200HX-CPU5@-
(Z)E/ CPU6@-(Z)E/
CPU8@-(Z)E,
C200HG-CPU5@-
(Z)E/ CPU6@-(Z)E,
CS Series
CS Series CJ Series CQM1, CQM1H
C200HW-SRM21-V1 CS1W-SRM21 CJ1W-SRM21 CQM1-SRM21-V1
High-speed Communications Mode or Long-distance Communications Mode (switched using the DIP switch
on front panel)
Possible
10 Units (when
using a single Special
I/O Unit node
number (i.e., 10
words))
5 Units (when using
two Special I/O Unit
node number (i.e.,
20 words))
16 Units (when
using a single Special
I/O Unit node
number (i.e., 10
words))
8 Units (when using
two Special I/O Unit
node number (i.e.,
20 words))
96 Units (when
using a single Special
I/O Unit node
number (i.e., 10
words))
95 Units (when
using two Special
I/O Unit node number
(i.e., 20 words))
Can be mounted on the CPU Backplane or Expansion I/O Backplane.
Can’t be mounted on a SYSMAC BUS Slave (RT) Rack.
40 Units CQM1: 1 Unit
CQM1H: Up to the
number corresponding
to the maximum
I/O points for the
CPU Unit.
Can be connected
in the CPU Rack or
Expansion Rack.
No restrictions.