Omron CS1W-MCH71 -, Руководство по эксплуатации

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Nomenclature and Functions
Section 3-1
The rotary switch located on the forehead of MC Unit can set the unit num-
bers.
The maximum of 16 MC Units can be mounted to one CS-series PLC, and a
maximum of 12 MC Units can be mounted to one CJ-series PLC.
With a CJ-series PLC, up to 10 CPU Bus Units can normally be connected in
the CPU Rack or in each Expansion Rack. Each CJ1W-MCH71 MC Unit,
however, requires the space of three standard Units. Therefore, a maximum of
only 3 MC Units plus one other CPU Bus Unit can be mounted per Rack.
The same unit number cannot be used twice in one PLC.
!Caution Please check if the power is OFF when you start the settings.
DIP Switch on the Back
Panel of the Unit These switches are inside the case and are used for special purposes like
shipping inspection mode, etc. Therefore, do not operate them.
Note If the power is turned ON under this setting, the MC Unit will be started after
various user settings are set beck to their factory default values.
3-1-2 Area Allocations
Word Allocations Using
Unit Numbers The bit and DM areas used by the MC Unit are allocated based on the unit
number.
CPU Bus Unit Allocated
Bit Area The bit area is allocated 25 words for each unit number starting from the word
1500.
(Examples)
Unit Number: 6 Unit Number: 12 (Hexadecimal)
1 2 Status
OFF OFF Normal operation
ON OFF Reserved for shipping inspection by OMRON (Do not set.)
OFF ON Reserved for shipping inspection by OMRON (Do not set.)
ON ON Reserved for shipping inspection by OMRON (Do not set.) (See
note.)
12
O N
←
Unit number Bit area Unit number Bit area
0 Words 1500-1524 8 Words 1700-1724
1 Words 1525-1549 9 Words 1725-1749
2 Words 1550-1574 10 Words 1750-1774
3 Words 1575-1599 11 Words 1775-1799
4 Words 1600-1624 12 Words 1800-1824
5 Words 1625-1649 13 Words 1825-1849
6 Words 1650-1674 14 Words 1850-1874
7 Words 1675-1699 15 Words 1875-1899