Siemens 6ES5377-0AB21 Storage Module

Product manual:

Siemens 6ES5377-0AB21 is a storage module in the S5 series PLC, specifically an EPROM storage module. This type of module is commonly used for program storage and data management in industrial automation. The following is the detailed information of the module:
Key features:
Series: S5 Series
Type: EPROM storage module
Capacity: 64 KB (kilobytes)
Function:
Used to store information such as user programs, data blocks, function blocks, etc
Can maintain stored data in the event of a power outage
Erasing method: It is necessary to erase the data of EPROM through ultraviolet light, and then reprogram it
Applicable system: Used in conjunction with the CPU module of Siemens S5 series PLC, such as S5-115U, S5-135U, S5-155U, etc
advantage:
High reliability, suitable for applications that require long-term data storage
No need for battery backup, stored content can still be maintained in the absence of power
Application scenarios:
This module is suitable for industrial applications that require long-term solidification of PLC programs in equipment and infrequent program changes. It is commonly used in manufacturing, factory automation, process control, and other fields.
matters needing attention:
Programming and erasing: Since EPROM can only be erased by ultraviolet light, it is necessary to confirm its correctness before programming to avoid frequent changes.
Compatibility: Ensure that the module is compatible with your PLC system model before use.

Product details picture:

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