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The Siemens 6ES7954-8LE02-0AA0 is a Micro Memory Card designed for SIMATIC S7-300 and S7-400 automation systems. This Flash memory card serves as the primary load memory for CPUs and stores user programs. It also stores project data such as symbols and comments. The card provides non-volatile memory, retaining data even after power loss.
Technical Specifications
The Siemens 6ES7954-8LE02-0AA0 offers a capacity of 4 MB for program and data storage. It operates at 5 V with a typical current consumption of 7 mA . The card measures 24 mm x 32 mm x 1.4 mm and weighs approximately 0.035 kg . It meets the requirements of the S7 MMC standard . The card is a version 2 product with hardware release 02 . It requires 20 ms for write operations per block (1 word) and 40 ms for 4 words .
Key Technical Data
| Parameter | Specification |
|---|---|
| Product Type | Micro Memory Card (MMC) |
| Compatibility | SIMATIC S7-300, C7, S7-400 |
| Memory Capacity | 4 MB |
| Memory Type | Flash (FEPROM) |
| Supply Voltage | 5 V (via CPU) |
| Current Consumption | 7 mA (typical) |
| Write Time (1 word) | 20 ms |
| Dimensions (L x W x H) | 24 x 32 x 1.4 mm |
| Weight | Approx. 0.035 kg |
| Non-Volatile | Yes (data retained without power) |
Installation and Applications
The Siemens 6ES7954-8LE02-0AA0 plugs directly into the MMC slot of the CPU . Users can easily transfer programs and configuration data to the CPU using this card . It is ideal for situations requiring frequent program updates. The memory card supports all S7-300 CPUs and is compatible with S7-400 systems . It also allows for firmware updates in compatible modules .
Performance and Use Cases
This MMC ensures reliable data storage for critical automation tasks. Its Flash technology allows repeated program modifications and data logging without wear concerns . The 4 MB capacity accommodates large user programs and comprehensive diagnostic data . The Siemens 6ES7954-8LE02-0AA0 is an essential accessory for any S7 system. It is especially valuable for manufacturing environments with diverse applications .