Q Series CPU & Extension Base Units
**CPU & Extension Base Units**
**Q33B, Q35B, Q38B, Q312B**: These are **CPU base units** with different numbers of **I/O slots** and a **dedicated power supply slot**. They range from **3 to 12 I/O slots**, accommodating varying complexities of **automation tasks**.
- Q33B: 3 I/O slots + 1 power supply slot.
- Q35B: 5 I/O slots + 1 power supply slot.
- Q38B: 8 I/O slots + 1 power supply slot.
- Q312B: 12 I/O slots + 1 power supply slot.
**Q38DB, Q312DB**: High speed **CPU base units** designed for more demanding applications, providing **enhanced processing capabilities**.
- Q38DB: 8 I/O slots + 1 power supply slot, high-speed.
- Q312DB: 12 I/O slots + 1 power supply slot, high-speed.
**Extension Base Units** (Q63B, Q65B, Q68B, Q612B, Q52B, Q55B, Q65WRB, QA65B-E, QA68B-E, QA1S65B, QA1S68B): These units are used to **expand the system** by providing additional **I/O slots**. They vary in size and capacity, ranging from **2 to 12 slots**.
- Q63B: 3 I/O slots + 1 power supply slot.
- Q65B: 5 I/O slots + 1 power supply slot.
- Q68B: 8 I/O slots + 1 power supply slot.
- Q612B: 12 I/O slots + 1 power supply slot.
- Q52B: 2 I/O slots.
- Q55B: 5 I/O slots.
**Redundant and Specialized Units** (Q38RB, Q68RB, QA65B-E, QA68B-E, QA1S65B, QA1S68B): These are designed for **specialized tasks** like **redundant power supplies** or **system integration** between different series.
- Q38RB: Base unit for 2x redundant power supply (Q64RP) + CPU + 8 I/O slots.
- Q68RB: Extension unit for 2x redundant power supply (Q64RP) + 8 I/O slots.
- Q65WRB: Extension base unit for QnPRH with 5 I/O slots.
- QA65B-E, QA68B-E: Extensions to the main System Q rack, adding 5 or 8 slots respectively.
- QA1S65B, QA1S68B: Extensions for integration with QnS & AnS systems, adding 5 or 8 slots respectively.
These units allow for a highly **flexible** and **scalable** approach to **system design**, enabling businesses to **tailor their PLC system architecture** to their specific **operational requirements**.
>> Mitsubishi XXXX User manual (pdf)
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