Industrial-Grade Siemens 6ES5095-8MB01 S5-95U Central Processing Unit – 8AI, 1AO, 4 Interrupt Inputs, 2 High-Speed Counter Inputs

Industrial-Grade Siemens 6ES5095-8MB01 S5-95U Central Processing Unit – 8AI, 1AO, 4 Interrupt Inputs, 2 High-Speed Counter Inputs - Image 2

Industrial-Grade Siemens 6ES5095-8MB01 S5-95U Central Processing Unit – 8AI, 1AO, 4 Interrupt Inputs, 2 High-Speed Counter Inputs

Product Overview

The Siemens 6ES5095-8MB01 is a compact central processing unit that forms the intelligent core of the SIMATIC S5-95U programmable logic controller family, representing one of Siemens’ most successful compact automation solutions for small to medium-scale industrial control applications. As a CPU 95B type within the S5-095 series, the Siemens 6ES5095-8MB01 distinguishes itself through the integration of a PROFIBUS (SINEC L2) communication interface alongside a conventional 20mA TTY current loop interface, enabling seamless connectivity to operator panels, programming devices, personal computers, and broader fieldbus networks. The Siemens 6ES5095-8MB01 embodies Siemens’ engineering philosophy of combining computational intelligence, I/O capability, and communication flexibility into a single, space-efficient module that can be deployed as a standalone controller or expanded into a more capable distributed system.

At the heart of the Siemens 6ES5095-8MB01 lies 16KB of integrated work memory, of which approximately 8KB is available for user program storage, providing ample capacity for typical sequence control, interlock logic, and data acquisition tasks programmed using the classic STEP 5 development environment. What truly sets the Siemens 6ES5095-8MB01 apart is its extraordinary level of integration: the module natively incorporates 16 digital inputs (24V DC, sink type), 16 digital outputs (24V DC, 0.5A per point), 4 interrupt-capable inputs, 8 analog voltage inputs (0-10V DC, reconfigurable as digital inputs), 1 analog output (0-10V DC or 0-20mA), and 2 high-speed counter inputs (Channel A at 5kHz, Channel B at 2kHz). This comprehensive I/O package allows the Siemens 6ES5095-8MB01 to control an entire small machine or production cell without requiring any additional I/O modules, dramatically reducing cabinet footprint, wiring complexity, and total system cost.

Powered by a standard 24V DC supply, the Siemens 6ES5095-8MB01 operates reliably across an ambient temperature range of 0°C to +60°C and carries an IP20 protection rating suitable for installation within industrial control enclosures. Beyond its onboard capabilities, the Siemens 6ES5095-8MB01 can be expanded with up to 32 S5-100U I/O modules via its backplane bus, transforming a compact starter controller into a moderately sized distributed control system capable of handling complex automation challenges. Although Siemens has officially declared the Siemens 6ES5095-8MB01 as end-of-life, it remains a cornerstone component in countless operational SIMATIC S5 installations worldwide, and its continued availability through specialized spare parts suppliers ensures that existing investments in S5-95U-based automation infrastructure can be maintained and serviced for years to come.

Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	6ES5095-8MB01
Manufacturer	Siemens AG
Product Type	Compact Central Processing Unit (CPU 95B)
Series	SIMATIC S5 › S5-95U › S5-090/095/100
Program Memory	16 KB total (approx. 8 KB user program available)
Programming Language	STEP 5
Digital Inputs	16 × 24V DC, Sink (Negative) Logic
Digital Outputs	16 × 24V DC, 0.5A per point
Interrupt Inputs	4 channels
Analog Inputs	8 × 0-10V DC (reconfigurable as digital inputs)
Analog Output	1 × 0-10V DC or 0-20mA
Counter Inputs	2 channels (ChA: 5kHz, ChB: 2kHz)
Communication Interface 1	1 × 20mA TTY current loop (for OP/PG/PC/SINEC L1)
Communication Interface 2	1 × PROFIBUS (SINEC L2)
Power Supply	24V DC
Expansion Capability	Up to 32 S5-100U modules via backplane
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +70°C
Protection Class	IP20 (control cabinet installation required)
Backup Battery	1/2 AA lithium battery, part # 6ES5980-0MA11
Dimensions (H×W×D)	Approximately 290 × 50 × 210 mm
Weight	Approximately 1.3 kg
Mounting	S5-95U system rack / DIN rail
Product Status	Discontinued (Siemens official EOL)

Main Features and Advantages

The Siemens 6ES5095-8MB01 delivers an exceptional combination of integration, communication capability, and field-proven reliability that continues to make it a preferred choice for maintaining and upgrading legacy SIMATIC S5 automation systems. Its design philosophy centers on providing maximum functionality within a minimal footprint, and this objective is achieved with remarkable success.

Unmatched Integration Density:

The defining strength of the Siemens 6ES5095-8MB01 is its all-in-one architecture. By packing 16 digital inputs, 16 digital outputs, 8 analog inputs, 1 analog output, 4 interrupt inputs, and 2 high-speed counters into a single compact module, the Siemens 6ES5095-8MB01 eliminates the need for separate I/O modules in the vast majority of small-scale automation applications. This integration translates directly into reduced cabinet space, simplified wiring, fewer potential failure points, and significantly lower total installed cost. For machine builders and OEMs, the Siemens 6ES5095-8MB01 offers a turnkey control solution that can be deployed rapidly and commissioned with minimal engineering effort.

Dual Communication Interfaces for Maximum Connectivity:

Unlike the CPU 95A variant which offers only a TTY interface, the Siemens 6ES5095-8MB01 adds a full PROFIBUS (SINEC L2) interface as its second communication port. This dual-interface architecture allows the Siemens 6ES5095-8MB01 to simultaneously communicate with programming devices and operator panels via the 20mA TTY current loop while participating in a PROFIBUS fieldbus network for plant-wide data exchange and supervision. The inclusion of PROFIBUS capability future-proofs the Siemens 6ES5095-8MB01, enabling it to integrate seamlessly with higher-level SCADA systems, HMIs, and other PROFIBUS-enabled devices—a critical advantage for facilities seeking to modernize their automation architecture without completely replacing existing S5-95U controllers.