Schneider PCBALU202 | TSX Compact CPU

The Schneider PCBALU202 serves as the central processing unit for TSX Compact automation systems. This CPU module delivers efficient program execution for medium-scale control applications. It includes 256 KB of built-in flash memory for user program storage. Weighing only 0.4 kg, the Schneider PCBALU202 fits into any standard M340 rack slot. Its dimensions measure 100 mm x 55 mm x 70 mm.

Processing Power and Memory Architecture

The Schneider PCBALU202 executes 10 instructions per millisecond for reliable real-time control. This processor handles up to 2048 discrete I/O and 128 analog I/O channels. It also features 64 KB of internal RAM for fast data access. Moreover, the Schneider PCBALU202 includes 256 KB of flash memory for program backup and storage. Consequently, you can store your complete application without needing external memory cards.

Communication Ports and Energy Storage

The Schneider PCBALU202 features one USB port and one Ethernet port for programming. The USB interface allows direct PC connection for fast program downloads. The Ethernet port supports Modbus TCP for seamless integration with HMIs and SCADA systems. Importantly, the Schneider PCBALU202 contains no internal battery for maintenance-free operation. It stores programs in non-volatile flash memory instead of relying on battery backup. Therefore, you never need to replace batteries or worry about program loss.

Technical Specifications Table

Below are the complete technical parameters for engineers and procurement teams:

Parameter	Specification
Full Product Name	Schneider PCBALU202
Product Category	TSX Compact CPU / Modicon M340 Processor
Processor Type	32-bit microcontroller
Processing Speed	10 instructions per millisecond
Program Memory (Flash)	256 KB
Internal RAM	64 KB
Discrete I/O Capacity	Up to 2048 channels
Analog I/O Capacity	Up to 128 channels
Built-in Communication Ports	1 x USB + 1 x Ethernet (RJ45)
USB Port Type	Mini-B (programming only)
Ethernet Speed	10/100 Mbit/s auto-negotiation
Supported Protocols	Modbus TCP, Modbus UDP, SNMP
Energy Storage	No battery (flash memory only)
Current Consumption (5V DC)	360 mA from rack
Power Dissipation	1.8 W maximum
Number of Components	1 main PCB + 2 communication ports + metal housing
Net Weight	0.4 kg (400 grams)
Gross Weight (packaged)	520 grams
Dimensions (H x W x D)	100 mm x 55 mm x 70 mm
Real-Time Clock	Yes (requires external battery or capacitor)
RTC Backup	Supercapacitor (7 days typical)
Ethernet Connections	16 simultaneous connections
Web Server	Embedded (for diagnostics only)
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C
Degree of Protection	IP20
Certifications	CE, UL 508, CSA, ATEX Zone 2
Configuration Software	EcoStruxure Control Expert, Unity Pro M340

Installation and Application Details

The Schneider PCBALU202 mounts directly into any Modicon M340 rack slot. Install this processor in the leftmost slot of the rack for proper operation. You need EcoStruxure Control Expert or Unity Pro M340 software for programming. The Schneider PCBALU202 suits small packaging machines, conveyor sections, and pump stations. Its built-in Ethernet port eliminates the need for separate communication modules. Thus, this compact CPU reduces system cost while maintaining reliable performance. The supercapacitor maintains the real-time clock for approximately 7 days without power.