6AG1315-6FF04-2AB0 CPU

Applications

The Siemens 6AG1315-6FF04-2AB0 is a SIPLUS S7-300 CPU 315F-2DP designed for industrial automation systems that require standard PLC processing and integrated fail-safe control functions. Based on the 6ES7315-6FF04-0AB0 platform, this CPU combines 384 KB of work memory with MPI and PROFIBUS DP communication capabilities.

Unlike the CPU 315F-2PN/DP models, this version uses PROFIBUS DP as its second communication interface rather than integrated PROFINET. Its fail-safe functionality makes it suitable for automation architectures where safety-related control and distributed field communication are important.

Typical applications include:

• Industrial machine safety: Supports safety-related control functions in appropriately engineered and validated automation systems.

• Manufacturing equipment: Coordinates machine sequences, production operations, and equipment interlocks.

• Distributed I/O systems: Communicates with compatible remote I/O stations through PROFIBUS DP.

• Material handling systems: Supports control applications involving conveyors, transfer equipment, and automated machinery.

• Industrial process control: Executes PLC logic and coordinates connected field devices.

• Existing S7-300 installations: Provides a SIPLUS fail-safe CPU option for compatible systems operating in demanding environmental conditions.

Advantages

1. Integrated Fail-Safe Control

The CPU 315F-2DP supports standard PLC operations and safety-related automation functions. This allows engineers to implement coordinated control and safety tasks within a compatible SIMATIC S7-300 architecture.

2. PROFIBUS DP Communication

Its integrated MPI interface and second PROFIBUS DP master/slave interface support communication with compatible automation devices and distributed I/O stations.

3. 384 KB Work Memory

The CPU provides 384 KB of work memory for program execution and data processing, making it suitable for a range of medium-complexity S7-300 control applications.

4. Integrated 24 V DC Power Supply

The module includes an integrated 24 V DC power supply, simplifying the power arrangement within compatible S7-300 installations.

5. SIPLUS Environmental Protection

Conformal coating provides additional protection for electronic components against environmental influences. The specified operating temperature range of -25 to +60°C supports installations exposed to wider temperature variations than conventional indoor control environments.

6. Established Siemens Engineering Platform

The CPU can be configured using Siemens STEP 7 engineering software, with Distributed Safety required for fail-safe application engineering. This supports maintenance and integration within compatible S7-300 projects.

Technical FAQs

Q1: What is the main function of the Siemens 6AG1315-6FF04-2AB0?

It is a fail-safe central processing unit for SIMATIC S7-300 automation systems. It executes standard PLC programs and supports safety-related control functions in appropriately configured applications.

Q2: What does CPU 315F-2DP mean?

The 315F designation identifies a CPU 315 with fail-safe functionality. The 2DP designation indicates its integrated MPI interface and additional PROFIBUS DP communication interface.

Q3: How much work memory does this CPU provide?

The module has 384 KB of integrated work memory for PLC program execution and data processing.

Q4: Does the 6AG1315-6FF04-2AB0 support PROFINET?

No. This model uses MPI and PROFIBUS DP interfaces. Applications requiring integrated Ethernet PROFINET communication should consider a compatible CPU 315F-2PN/DP model.

Q5: Can the CPU operate as a PROFIBUS DP master and slave?

Yes. Its second interface supports PROFIBUS DP master and slave communication, allowing integration with compatible distributed automation devices.

Q6: Is a Micro Memory Card required?

Yes. A compatible Siemens Micro Memory Card is required for operation and stores the user program and relevant configuration data.

Q7: Which software is required for programming this CPU?

The specified engineering options include STEP 7 V5.5 SP1 or higher, or STEP 7 V5.2 SP1 or higher with HSP 218, together with Distributed Safety for fail-safe engineering.

Q8: What is the role of the integrated 24 V DC power supply?

It provides the CPU's required DC supply within the S7-300 installation. The external supply must remain within the specified permissible voltage range and installation requirements.

Q9: What should be checked if PROFIBUS DP communication fails?

Check the bus cable, connector wiring, termination resistors, station addresses, transmission rate, and network configuration. Also inspect diagnostic information from the CPU and connected DP devices.

Q10: Can this CPU replace a Siemens CPU 315F-2PN/DP?

Not as a direct like-for-like replacement. The 6AG1315-6FF04-2AB0 uses PROFIBUS DP interfaces and does not provide the integrated PROFINET interface found on CPU 315F-2PN/DP models. Hardware configuration, network architecture, safety program, and application requirements must be reviewed before replacement.