The Siemens 6ES5942-7UF13 is a specialized fail-safe central processing unit engineered for the Simatic S5-115F automation series. As a high-integrity component, the CPU 942F is specifically designed for safety-critical applications where reliable, redundant logic execution is required. By utilizing a dual-channel processing architecture, the unit continuously monitors its own internal register states and execution logic to detect potential faults in real-time. In the event of a detected discrepancy, the module triggers a secure shutdown, moving connected field actuators to a de-energized, safe state.
This CPU is intended for use in high-risk industrial environments requiring fail-safe operation, including chemical processing facilities, automated mining equipment, and safety-critical power generation systems. It is a vital component for maintaining the integrity of legacy S5-115F safety loops.
| Model | 6ES5942-7UF13 (CPU 942F) |
| Series | Simatic S5-115F |
| Operating Temperature | 0 to 55 deg C |
| Storage Temperature | -40 to 70 deg C |
| Input Power | 5 VDC (via backplane) |
| Max Current Consumption | 2.5 A |
| Memory | Integrated RAM with EPROM/EEPROM support |
Is the 6ES5942-7UF13 still in production? No, this unit was discontinued by Siemens on January 11, 1994. Maintaining spare inventory is recommended for ongoing system support.
What system is this CPU designed for? It is designed exclusively for the Siemens Simatic S5-115F fail-safe automation system.
Does this module require external power? No, the module receives its nominal 5 VDC power directly through the S5-115F backplane.
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