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Technical Overview
The Siemens 6ES5941-7UA13, also known as the CPU 941 F, is a central processing unit designed for the SIMATIC S5-115U programmable controller series . This module serves as the core of the automation system, executing user programs and managing all control tasks. It provides 2 KB of RAM, and users can expand this capacity up to 18 KB by using memory submodules . The module includes a 20 mA current loop interface for connecting a programming device or operator panel . It also features a receptacle for a 375 memory submodule (RAM/EPROM/EEPROM) for additional program storage. The front panel includes a RUN/STOP switch with corresponding LEDs and a switch for setting the retentiveness of bit memories, timers, and counters . The CPU 941 uses the STEP 5 programming language .
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model Number | 6ES5941-7UA13 |
| Product Type | Processor Module / CPU |
| System Compatibility | SIMATIC S5-115U |
| Processor Designation | CPU 941 F |
| Memory Type | RAM (battery-backed) |
| Memory Capacity | 2 KB (expandable to 18 KB) |
| Memory Submodule Support | 375 submodule (RAM/EPROM/EEPROM) |
| Communication Interface | 1 x 20 mA (current loop) |
| Programming Language | STEP 5 |
| Height | 31 cm |
| Width | 4.5 cm |
| Depth | 19 cm |
| Weight | 1.1 kg |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH (non-condensing) |
Key Features
Modular Memory Expansion – Users can expand the memory up to 18 KB using plug-in submodules. This flexibility accommodates varying program sizes .
Integrated Programming Interface – The built-in 20 mA current loop interface enables direct connection to programming devices. It simplifies on-site program uploads and debugging .
Flexible Program Storage – The module supports 375 memory submodules for program and data storage. This feature protects critical programs from power failures .
Simple Operation – The front panel provides a RUN/STOP switch for manual control. Status LEDs offer immediate visual feedback on CPU state .
Retentive Memory Configuration – Users can set the retentiveness of bit memories, timers, and counters. This configuration ensures data persistence during power cycles .
Applications
The Siemens 6ES5941-7UA13 is ideal for industrial automation tasks in manufacturing, process control, and machine control. It performs reliably in conveyor systems, packaging lines, and material handling applications.