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System Configuration Section 1-2
Simultaneously
Connecting
Expansion I/O Units
and CJ-series Units
When Expansion Units or Expansion I/O Units are connected simultaneously
with CJ-series Special I/O Units or CPU Bus Units, they cannot be connected
in a straight line with the CP1H CPU Unit.
As shown in the diagram below, use a DIN Track to mount the CP1H CPU Unit
and CJ-series Units, and use CP1W-CN811 I/O Connecting Cable to connect
the Expansion Units or Expansion I/O Units.
Note Only one I/O Connecting Cable can be used per System.
1-2-4 Restrictions on System Configuration
The following restrictions apply to the CP-series Expansion Units, CP-series
Expansion I/O Units, and CJ-series Units that can be connected to CP1H
CPU Units.
■ Number of Expansion Units and Expansion I/O Units Connected
A maximum of seven Units can be connected. If eight or more Units are con-
nected, an I/O UNIT OVER error will occur and the PLC will not operate.
■ Number of Words Allocated
The total number of either input or output words allocated to Expansion Units
and Expansion I/O Units must be no more than 15. Even if no more than
seven Units are connected, an I/O UNIT OVER error will be generated if 16 or
more input or output words are allocated.
■ Current Consumption
The total combined current consumption of the CP1H CPU Unit, Expansion
Units, Expansion I/O Units, and CJ-series Units must be no more than 2 A for
5 V and 1 A for 24 V and the total power consumption must be no more than
30 W. For CPU Units with AC power supply, the current consumption from
external 24-VDC power supply output must be included.
■ Number of CJ-series Units Connected
No more than two CJ-series Special I/O Units or CPU Bus Units can be con-
nected to the CP1H via a CJ Unit Adapter. No CJ-series Basic I/O Units can
be connected.
Example: Calculating the Limit on the Number of Connected Units
In this example, because each CP1W-TS002 Temperature Sensor Unit is allo-
cated four input words, no more than three of these Units can be connected.
(Three Units × four words = 12 words.) After these have been connected,
there remain unallocated three input words and 15 output words. The follow-
ing table provides an example of Units that can be mounted in combination
without exceeding these limits.
SYSMAC
CP1H
BATTERY
MEMORY
PERIPHERAL
POWER
ERR/ALM
BKUP
100CH 101CH
1CH
EXP
L1 L2/N COM 01 03 05 07 09 11 01 03 05 07 09 11
00 02 04 06 08 10 00 02 04 06 08
10
00 01 02 03 04 06 00 01 03 04 06
COM COM COM COM 05 07 COM 02 COM 05
07
IN
OUT
CP1H
CJ Unit Adapter
CJ-series Units
CP1W-CN811
I/O Connecting Cable
(0.8 m)
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