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Siemens 6ES7971-5BB00-0AA0 SIMATIC S7-300 SUPERCAP

Siemens SIMATIC S7-300 SUPERCAP for real-time clock buffering.

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ManufacturerSiemens

Part number6ES7971-5BB00-0AA0

Part Number 6ES7971-5BB00-0AA0

Manufacturer Siemens

Series SIMATIC S7-300

Function Real-time clock buffering

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Supercapacitor technology Buffers real-time clock For SIMATIC S7-300 Compatible with CPU 314+

Product description

The Siemens 6ES7971-5BB00-0AA0 is a SUPERCAP (supercapacitor) module designed for the SIMATIC S7-300 PLC series. Its primary function is to buffer the real-time clock (RTC) of the CPU, specifically for CPU 314 and all higher models within the S7-300 range. This ensures accurate timekeeping even when the PLC is not powered.

This component is vital for applications requiring precise time synchronization and uninterrupted clock functionality, such as time-stamped event logging, scheduled operations, and time-based control logic. It is commonly used in manufacturing, process control, and automation systems where time accuracy is paramount.

Stanlo Automation, a veteran-owned distributor specializing in surplus industrial automation parts, offers the Siemens 6ES7971-5BB00-0AA0. We provide reliable access to essential components to keep your S7-300 systems running efficiently.

Technical specifications

Part Number	6ES7971-5BB00-0AA0
Manufacturer	Siemens
Series	SIMATIC S7-300
Function	Real-time clock buffering
Compatibility	CPU 314 and higher

Common applications

Industrial Automation

PLC Real-time Clock

Time-stamped data logging

Scheduled operations

Process control systems

Compatible systems

SIMATIC S7-300 (CPU 314 and higher)

Also known as

Siemens S7-300 SUPERCAP 6ES7971-5BB00-0AA0 module SIMATIC S7-300 RTC buffer

Replaces / compatible with

This SUPERCAP module serves as a replacement for the real-time clock buffering mechanism on Siemens SIMATIC S7-300 CPUs, starting from the CPU 314 model.

Technical note

Expert tip

Ensure the SUPERCAP is properly charged before the main PLC power is removed to guarantee continuous real-time clock operation.

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Frequently asked questions

What is the purpose of the Siemens 6ES7971-5BB00-0AA0 SUPERCAP?

The Siemens 6ES7971-5BB00-0AA0 SUPERCAP is used to buffer the real-time clock on SIMATIC S7-300 CPUs (from CPU 314 upwards). It ensures that the PLC's clock continues to run accurately even when the main power supply is switched off, preventing time drift and data inconsistencies.