10
System Configuration Section 1-2
Note Number of I/O points = Number of input points (≤ 256) + Number of output
points (
≤ 256).
Maximum Number of Units
CPU Block Only
CPU Block and Expansion I/O Block
Note 1. An Analog Power Supply Unit is counted as one Unit, the same as I/O Units
and Dedicated I/O Units.
2. The Units that can be connected to the CPU Block and Expansion I/O
Block are also limited by power supply capacity, as shown in the following
table.
Note 1. If the CQM1-PA203 Power Supply Unit is used, the maximum current con-
sumption total is 3.6 A.
2. Includes current consumed by the CPU Unit, Communications Unit, and
Inner Boards.
3. Includes current consumed by the I/O Control Unit.
1-2-4 Inner Boards
CPU Unit Maximum number of Units connectable
Communications
Units
Inner Boards I/O Units Dedicated
I/O Units
CQM1H-CPU61 1 2 11
CQM1H-CPU51
CQM1H-CPU21 None None
CQM1H-CPU11
CPU Unit Maximum number of Units connectable
Communications
Units
Inner Boards I/O Units Dedicated
I/O Units
CQM1H-CPU61 1 2 5 on CPU Block
11 on Expansion I/O
Block
CQM1H-CPU51
CQM1H-CPU21 None None
CQM1H-CPU11
Block Max. current consumption
CPU Block 3.0 A (See note 2.) 5.0 A total (see note 1)
Expansion I/O Block 2.0 A (See note 3.)
Name Specifications Model number
High-speed Counter Board Pulse inputs (high-speed counter): 4 points
(single-phase: 50 kHz/500 kHz switchable; phase difference:
1x/2x/4x multiplication ratio, 25 kHz/250 kHz switchable)
External outputs: 4 points
CQM1H-CTB41
Pulse I/O Board Pulse inputs (high-speed counter): 2 points
(single-phase: 50 kHz, phase difference: 25 kHz)
Pulse outputs: 2 points (50 kHz) (fixed duty factor and variable
duty factor supported)
CQM1H-PLB21
Absolute Encoder Interface Board Absolute encoder (gray code binary) inputs: 2 points (4 kHz) CQM1H-ABB21
Analog Setting Board Analog settings: 4 points CQM1H-AVB41
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