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Components and Switch Settings Section 5-3
5-3-1 Indicators
The indicators show the operating status of the Unit. The following table
shows the meanings of the indicators.
5-3-2 Unit Number Switch
The CPU Unit and Analog Output Unit exchange data via the Special I/O Unit
Area and the Special I/O Unit DM Area. The Special I/O Unit Area and Special
I/O Unit DM Area word addresses that each Analog Output Unit occupies are
set by the unit number switch on the front panel of the Unit.
Always turn OFF the power before setting the unit number. Use a flat-blade
screwdriver, being careful not to damage the slot in the screw. Be sure not to
leave the switch midway between settings.
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.
LED Meaning Indicator Operating status
RUN (green) Operating Lit Operating in normal mode.
Not lit Unit has stopped exchanging data with
the CPU Unit.
ERC (red) Error
detected by
Unit
Lit Alarm has occurred (such as disconnec-
tion detection) or initial settings are incor-
rect.
Not lit Operating normally.
ERH (red) Error in the
CPU Unit
Lit Error has occurred during data exchange
with the CPU Unit.
Not lit Operating normally.
ADJ (yellow) Adjusting Flashing Operating in offset/gain adjustment
mode.
Not lit Other than the above.
Switch
setting
Unit
number
Special/O Unit Area
addresses
Special I/O Unit DM Area
addresses
0 Unit #0 CIO 2000 to CIO 2009 D20000 to D20099
1 Unit #1 CIO 2010 to CIO 2019 D20100 to D20199
2 Unit #2 CIO 2020 to CIO 2029 D20200 to D20299
3 Unit #3 CIO 2030 to CIO 2039 D20300 to D20399
4 Unit #4 CIO 2040 to CIO 2049 D20400 to D20499
5 Unit #5 CIO 2050 to CIO 2059 D20500 to D20599
6 Unit #6 CIO 2060 to CIO 2069 D20600 to D20699
7 Unit #7 CIO 2070 to CIO 2079 D20700 to D20799
8 Unit #8 CIO 2080 to CIO 2089 D20800 to D20899
9 Unit #9 CIO 2090 to CIO 2099 D20900 to D20999
10 Unit #10 CIO 2100 to CIO 2109 D21000 to D21099
~~ ~ ~
n Unit #n CIO 2000 + (n x 10) to
CIO 2000 + (n x 10) + 9
D20000 + (n x 100) to
D20000 + (n x 100) + 99
~~ ~ ~
95 Unit #95 CIO 2950 to CIO 2959 D29500 to D29599
MACH
No
.
10
1
10
0
0
9
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1