Omron CQM1 
​PLC Modules & Parts
​

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• Compact Modular PLC — mid-size controller with CPU, I/O, analog, and special function units attachable to a single base rack.
• Flexible Expansion — supports digital/analog I/O, communication, motion control, and memory cassettes, allowing scalable automation solutions.
• Models & Options — includes CQM1/CQM1H CPUs (e.g., CPU11, CPU21, CPU51, CPU61) with matching expansion units, power supplies, and programming cables.

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CPU Units (Base / Main CPU)

Category 
CPU Units
CPU Units
CPU Units
CPU Units

Part / Modules
CQM1H-CPU11
CQM1H-CPU21
CQM1H-CPU51
CQM1H-CPU61

Part Number
​CQM1H-CPU11
CQM1H-CPU21
CQM1H-CPU51
CQM1H-CPU61

Description
Entry CPU (lower memory/I-O, no inner board or Controller Link support)
Mid-range CPU with more capacity
High performance CPU; supports Inner Boards & Controller Link
Top-end CPU with maximum memory and I/O capacity​

Power Supply Units

Category 
Power Supplies
Power Supplies
Power Supplies
Power Supplies​

Part / Modules
​CQM1-PA203
CQM1-PA206
CQM1-PA216
CQM1-PD026

Part Number
​​​CQM1-PA203
CQM1-PA206
CQM1-PA216
CQM1-PD026

Description
​AC Power Supply (100–240V AC, ~18W output)
AC Power Supply with 24VDC output (~30W total)
AC Power Supply, selectable 100/230V
DC Power Supply (24VDC input)

Memory / Backup Modules

Category 
​Memory Modules
Memory Modules
Memory Modules

Part / Modules
​CQM1H-ME16K / ME16R
CQM1-ME04K / ME04R
CQM1-MP08K / MP08R

Part Number
​​CQM1H-ME16K / ME16R
CQM1-ME04K / ME04R
CQM1-MP08K / MP08R

Description
​Flash memory cassette with/without clock (16K words)
EEPROM memory cassette (~4K words)
EPROM memory cassette (~8K words)

Inner Boards (Mounted Inside CPU for added features)

Category 
Inner Boards
Inner Boards
Inner Boards
Inner Boards
Inner Boards
Inner Boards​

Part / Modules
​CQM1H-CTB41
CQM1H-PLB21
CQM1H-ABB21
CQM1H-SCB41
CQM1H-MAB42
CQM1H-AVB41

Part Number
​​​CQM1H-CTB41
CQM1H-PLB21
CQM1H-ABB21
CQM1H-SCB41
CQM1H-MAB42
CQM1H-AVB41

Description
​High-speed Counter Inner Board
Pulse I/O Inner Board
Absolute Encoder Interface Board
Serial Communications Board (RS-232C/RS-422A/485)
Analog Input Inner Board
Analog Setting Board

Dedicated I/O Units

Category 
​Dedicated I/O Units
Dedicated I/O Units
Dedicated I/O Units
Dedicated I/O Units
Dedicated I/O Units
Dedicated I/O Units
Dedicated I/O Units

Part / Modules
​CQM1-AD041
CQM1-DA021
CQM1-IPS01 / IPS02
CQM1-SRM21-V1
CQM1-DRT21
CQM1-B7A02 / B7A03
CQM1-TC001 / TC002

Part Number
​​​CQM1-AD041
CQM1-DA021
CQM1-IPS01 / IPS02
CQM1-SRM21-V1
CQM1-DRT21
CQM1-B7A02 / B7A03
CQM1-TC001 / TC002

Description
​Analog Input Unit
Analog Output Unit
Interface/power units for isolated modules
CompoBus/S Master Unit
DeviceNet I/O Link Unit
B7A Interface Units (I/O blocks)
Temperature Control Units

Sensor & Auxiliary / Peripheral Devices

Category 
​Sensor & Auxiliary
Sensor & Auxiliary
Sensor & Auxiliary

Part / Modules
​CQM1-SEN01
CQM1-TU001
E39-M11

Part Number
​​​CQM1-SEN01
CQM1-TU001
E39-M11

Description
​Sensor Unit (4-point input)
Remote Console / teaching pendant
Dummy Module (slot filler)