Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

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23
System Configuration
Section 1-2
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 CPM1A-TS002 Temperature Sensor Unit is
allocated four input words, no more than three of these Units can be con-
nected. (Three Units
×
four words = 12 words.) After these have been con-
nected, there remain unallocated three input words and 15 output words. The
following table provides an example of Units that can be mounted in combina-
tion without exceeding these limits.
Combination Example
■ Restrictions on the number of simultaneously ON output points
CP1W-32ER/32ET/32ET1’s maximum number of simultaneously ON points is
24 (75%).
Number of Units CP1H-X40DR-A TS002
×
3 + TS001
×
1 + 20EDT
×
1 + 8ER
×
2 Total: 7 Units
≤
7 Units
Input words --- 4 words
×
3 Units
= 12 words
2 words
×
1 Unit
= 2 words
1 word
×
1 Unit
= 1 word
0 words Total: 15 words
≤
15 words
Output words --- 0 words 0 words 1 word
×
1 Unit
= 1 word
1 word
×
2 Units
= 2 words
Total: 3 words
≤
15 words
Current
consump-
tion 5 V 0.420 A 0.040 A
×
3
= 0.120 A
0.040 A
×
1
= 0.040 A
0.130 A
×
1
= 0.130 A
0.026 A
×
2
= 0.0520 A
Total: 0.762 A
≤
2 A
24 V 0.070 A 0.059 A
×
3
= 0.177 A
0.059 A
×
1
= 0.059 A
0 A 0.044 A
×
2
= 0.088 A
Total: 0.394 A
≤
1 A
Power con-
sumption 5 V
×
0.762 A = 3.81 W
24 V
×
0.394 A = 9.46 W
Total: 13.27 W
≤
30 W