Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 235

CompoBus/S I/O Link Units
Specifications
LED Indicators
Usage Procedure
Connect the Unit.
Determine the node address of
the CompoBus/S I/O Link Unit and
set the DIP switch.
Wire the CompoBus/S transmission
path.
Connecting the
CompoBus/S I/O Link
Unit
Item
Model number
Master/slave
Number of I/O points
Number of words allocated
in CPU Unit I/O memory
Node number setting
Current consumption
Indicator Status
COMM
ON
(yellow) ( ll )
OFF
ERR ON
(red) ( d)
OFF
Connect the CompoBus/S I/O Link Unit.
The node number should be a unique number between 0 and 15.
Use the DIP switch to set the CompoBus/S I/O Link Unit's node
number, communications mode, and the status of output data
when a communications error occurs.
Connect the CompoBus/S I/O Link Unit to a CompoBus/S
transmission path.
Connect the CompoBus/S I/O Link Unit to the CPU Unit. The number of Compo-
Bus/S I/O Link Units that can be connected depends on the PC. Three Units can
be connected to the CPM1A/CPM2A, five Units can be connected to the
CPM2C, and three Units can be connected to the CPM2C-S. When Expansion
I/O Units or other Expansion Units are also connected, they can be connected in
any order from the CPU Unit.
CPM1A/CPM2A CPU Unit
I/O Allocation
I/O words are allocated to the CompoBus/S I/O Link Unit in the same way as
Expansion I/O Units or other Expansion Units, the next available input and out-
put words are allocated. When "m" is the last allocated input word and "n" is the
Specification
CPM1A or CPM2A:
CPM2C or CPM2C-S :
CompoBus/S Slave
8 input points, 8 output points
1 input word, 1 output word
(Allocated in the same way as Expansion I/O Units
and other Expansion Units)
Set using the DIP switch
(Set before turning on the CPU Unit's power supply.)
50 mA
Meaning
Communications in progress.
Communications stopped or error has occurred.
A communications error has occurred.
Indicates normal communications or stand-by.
CPM1A-SRT21
CompoBus/S
I/O Link Unit
Section 3-3
CPM1A-SRT21
CPM2C-SRT21
CPM2C or
CPM2C-S
CompoBus/S I/O
CPU Unit
Link Unit
215