1-3SectionSetting the Unit Number
7
When wiring a Unit, place a cover over the top of the Unit to prevent wire clip-
pings and so on from getting inside. When the wiring has been completed, the
cover must be removed to prevent heat radiation.
Remove the cover after the
wiring has been completed.
1-3 Setting the Unit Number
The CPU Unit and Analog I/O Units exchange data via the IR area and the DM
area. The IR and DM word numbers that each Analog I/O Unit occupies are set
by the unit number switch on the front panel of the Unit.
Unit number switch
Switch setting Unit number IR words DM words
0 Unit #0 IR 100 to 109 DM 1000 to 1099
1 Unit #1 IR 110 to 119 DM 1100 to 1199
2 Unit #2 IR 120 to 129 DM 1200 to 1299
3 Unit #3 IR 130 to 139 DM 1300 to 1399
4 Unit #4 IR 140 to 149 DM 1400 to 1499
5 Unit #5 IR 150 to 159 DM 1500 to 1599
6 Unit #6 IR 160 to 169 DM 1600 to 1699
7 Unit #7 IR 170 to 179 DM 1700 to 1799
8 Unit #8 IR 180 to 189 DM 1800 to 1899
9 Unit #9 IR 190 to 199 DM 1900 to 1999
A Unit #A IR 400 to 409 DM 2000 to 2099
B Unit #B IR 410 to 419 DM 2100 to 2199
C Unit #C IR 420 to 429 DM 2200 to 2299
D Unit #D IR 430 to 439 DM 2300 to 2399
E Unit #E IR 440 to 449 DM 2400 to 2499
F Unit #F IR 450 to 459 DM 2500 to 2599
Note 1. Switches A to F can be set for the C200HX/HG-CPU5j-E/6j-E. Setting
numbers A to F for C200H, C200HS, C200HE, or C200HX/HG-
CPU3j-E/4j-E PCs will cause an I/O UNIT OVER error and the Unit will
not operate.
2. If two or more Special I/O Units are assigned the same unit number, an I/O
UNIT OVER error will be generated and the PC will not operate.
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