Siemens 6ES5374-1FH11 Memory Card SIMATIC S5-115U

Technical Overview

The 6ES5374-1FH11 memory card provides non-volatile storage for user programs and system data in SIMATIC S5-115U PLCs. This EEPROM-based card retains its contents even when the controller loses power. It stores up to 8 KB of program code, making it suitable for smaller to medium-sized automation tasks. Furthermore, this memory card offers a reliable alternative to battery-backed RAM for applications requiring data persistence.

Key Technical Specifications

Parameter	Specification
Brand	Siemens
Model Number	6ES5374-1FH11
Product Type	Memory Card
Series	SIMATIC S5-115U
Memory Technology	EEPROM
Storage Capacity	8 KB
Data Retention	Non-volatile (no battery required)
Compatibility	S5-115U CPUs with EPROM submodule slot
Approx. Weight	0.1 kg
Write Cycles	>10,000

Storage Capacity and Application Suitability

The 8 KB capacity accommodates many standard control programs for industrial automation tasks. Users can store moderate-sized logic sequences, timers, counters, and data blocks within this memory. Consequently, this card suits applications like conveyor control, packaging machines, and simple process monitoring.

EEPROM Technology and Data Safety

The EEPROM technology eliminates the need for a backup battery to retain program data. Therefore, the 6ES5374-1FH11 ensures program integrity even during extended power outages. Moreover, this memory technology supports over 10,000 write cycles, allowing for frequent program updates.

Installation and Compatibility

Users install this memory card directly into the EPROM submodule slot located on the S5-115U CPU module. The card fits securely without requiring additional mounting hardware or adapters. Engineers should verify CPU compatibility before ordering, as not all S5-115U processors support this memory type.