SIMATIC S5 256 KB Flash EPROM memory card
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12 months for new products and 6 months for used products.
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Siemens 6ES5374-2KH21 is a long-format SIMATIC S5 memory card. It uses 5 V Flash EPROM memory with a 256 KB capacity and is intended for compatible controllers and CPUs from the S5 family.
In legacy SIMATIC S5 systems, memory-card compatibility depends on the specific CPU and configuration. Before ordering, compare the complete catalog number, memory technology and capacity with the card previously installed in the controller. Similar 374-series numbers can represent different memory types and capacities.
SIMATIC S5 documentation is available from Siemens Industry Online Support. Other 374-series cards in our catalog include 6ES5374-2FH21 and 6ES5374-1KH21.
If the card is intended to replace a failed part in an operating controller, check the label on the old card and the CPU type. We can help compare the part numbers if required.
