Unit Number Switches - Omron CJ Series Operation Manual

Part Names and Functions
Indicator Name
ERH CPU Unit Error
Output Indicators
2-3-3

Unit Number Switches

22
Color Status
Red Lit
Not lit
The Output Indicators light to indicate when the corresponding Temperature
Control Unit output is ON.
The CPU Unit and the Temperature Control Unit exchange data through the
parts of the CPU Unit's CIO and DM Areas that are reserved for Special I/O
Units. The Temperature Control Unit's unit setting determines which words
are allocated.
Switch Unit
setting number
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
: :
n n
: :
94 94
The Temperature Control Unit occupies 20 words in the Special I/O Unit Area,
so do not set the same unit number or the next unit number on another Spe-
cial I/O Unit. Since the Temperature Control Unit occupies the words for two
unit numbers, the maximum unit number allowed is 94 (unlike most other Spe-
cial I/O Units that can be set to unit number 95.)
Note If two or more Special I/O Units are assigned the same unit number, a "UNIT
No. DPL ERR" error (in the Programming Console) will be generated (A40113
will turn ON) and the PLC will not operate.
An error occurred in the CPU Unit.
Normal operating status
Words allocated in Special I/O
Unit Area in CIO Area
CIO 2000 to CIO 2019
CIO 2010 to CIO 2029
CIO 2020 to CIO 2039
CIO 2030 to CIO 2049
CIO 2040 to CIO 2059
CIO 2050 to CIO 2069
CIO 2060 to CIO 2079
CIO 2070 to CIO 2089
CIO 2080 to CIO 2099
CIO 2090 to CIO 2109
:
CIO 2000 + (n x 10) to
CIO 2000 + (n x 10) + 19
:
CIO 2940 to CIO 2959
Section 2-3
Meaning
Words allocated in Special I/O
Unit Area in DM Area
D20000 to D20099
D20100 to D20199
D20200 to D20299
D20300 to D20399
D20400 to D20499
D20500 to D20599
D20600 to D20699
D20700 to D20799
D20800 to D20899
D20900 to D20999
:
D20000 + (n x 100) to
D20000 + (n x 100) + 99
:
D29400 to D29499