1-2SectionBasic Configuration
5
The Units that belong to the various Special I/O Unit groups are shown in the
following table. Their usage is limited according to the maximum current pro-
vided for the Rack and the amount of current consumed by each Unit. For de-
tails, refer to the C200H, C200HS, or C200HX/HG/HE Installation Guide.
There are restrictions on the number of Analog I/O Units that can be mounted on
a single CPU Rack, I/O Expansion Rack, or Remote I/O Slave Rack. Ensure that
the number of Units does not exceed the corresponding total given in the follow-
ing table and that the total current consumption of the Analog I/O Units and the
Units mounted to the same Rack does not exceed the maximum current pro-
vided for the Rack.
Limitations Due to Unit Current Consumption
Rack type Rack model
Number of Analog I/O Units that can be mounted on the
same Rack
AD003 DA003 DA004 MAD01 Combinations of the
models on the left
C200HX/HG/HE CPU
C200H-PS221-C
C200H-RT201-C
There are usage limitations for Remote I/O Slave Racks. Refer to Slave Racks
below for details.
Certain limitations apply to the number of Special I/O Units that can be mounted
on Slave Racks. The following table shows the maximum number of Group A, B,
C, and D Special I/O Units that can be mounted on a single Slave Rack when
only Units of that group are used.
Item A B C D
Type of Unit High-speed Counters
Position Control Units
(NC111/112)
ASCII Units
Analog I/O Units
ID Sensor Units
Fuzzy Logic Units
High-density I/O Units
Temperature Control
Units
PID Control Units
Cam Positioner Units
Temperature Sensor
Units
Voice Units
Position Control Units
(NC211)
Mountable number 4 Units 8 Units 6 Units 2 Units
If Units from any of the four groups are to be combined, then both of the following
two equations must be satisfied.
3A + B + 2C + 6D x 12
A + B + C + D x 8
When considering the limitations on the numbers of different types of Special I/O
Units that can be used, refer also to Number of Units previously described.
Special I/O Units are allocated IR area addresses according to the unit number
switch settings on their front panels, and not according to the slots in which they
are mounted.
With the C200H, do not mount an Analog I/O Unit in the two slots adjacent to the
CPU Unit. Doing so would prevent peripheral devices such as the Programming
Console from being connected.
Special I/O Units cannot be used on a C200H Remote I/O Slave Rack if the
Slave Rack is connected to different PC (i.e., C500, C1000H, or C2000H).
Slave Racks
System Configuration
Considerations
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