Siemens SIMATIC S7-300 · Ethernet IP Module

Siemens 6GK7343-1EX21-0XE0

The 6GK7343-1EX21-0XE0 is no longer supplied by Siemens. If one fails, finding a replacement quickly is what matters.

  1. ActiveSold and supported normally
  2. Phase OutRetirement announced, still orderable
  3. CancellationNormal sale ended, spares may remain
  4. Total DiscontinuationNo manufacturer supply or repair

ECS stage: Total Discontinuation.

Is the Siemens 6GK7343-1EX21-0XE0 discontinued?

On ECS's lifecycle assessment, the 6GK7343-1EX21-0XE0 is discontinued and no longer supplied by Siemens.

Source: ECS lifecycle assessment, based on ECS's internal lifecycle data in Command Centre. Last checked . Always confirm a specific part's status with the manufacturer before buying or planning a migration.

What Total Discontinuation means for you

The manufacturer has finished with the part. You may still find one through surplus or refurbished sellers, or in another site's stores, but that is not a supply chain. Knowing where your units are, and where a spare might be, is what shortens the stoppage when one fails.

How ECS defines Total Discontinuation · all four lifecycle stages

Before replacing a communications module

A communications module can stop a much larger part of the machine than its size suggests. We would document the protocol, node or IP addressing, rack configuration, connected devices and every PLC, HMI or SCADA dependency that references it.

If the migration changes network technology, the scope has to include the equipment at the other end of that link as well as the module itself. Capturing the topology now turns a future fault into a controlled network change rather than a discovery exercise.

ECS engineering guidance

6GK7343-1EX21-0XE0 part details

Manufacturer
Siemens
Range
SIMATIC S7-300
Name
SIMATIC NET CP 343-1 Standard Industrial Ethernet Communication Processor
Summary
Communications processor for connecting SIMATIC S7-300 systems to Industrial Ethernet and PROFINET IO, supporting ISO, TCP/IP, UDP, S7 communication, FETCH/WRITE, SEND/RECEIVE, RFC 1006 diagnostics, multicast, SNMP diagnostics, DHCP, NTP CPU synchronization, and 10/100 Mbit/s Ethernet via RJ45. Siemens lifecycle information lists end of product lifecycle 30/04/2020

Common questions about the 6GK7343-1EX21-0XE0

Is the Siemens 6GK7343-1EX21-0XE0 discontinued?

On ECS's lifecycle assessment, the 6GK7343-1EX21-0XE0 is discontinued and no longer supplied by Siemens.

Can I still buy a 6GK7343-1EX21-0XE0?

Not from Siemens. Surplus and refurbished sellers may have stock; check provenance and test before fitting.

An ECS engineer capturing a control panel on a tablet: PLC, drive and power supply identified and synced to Command Centre

Know where every unit is before one fails.

A Capture audit finds every 6GK7343-1EX21-0XE0 on your site, photographs it where it sits and checks it against manufacturer lifecycle status, so you know your exposure and where your spares are before a failure stops a line.

  • Every device located, photographed and lifecycle-checked
  • Findings report, plus a populated Command Centre
  • No production downtime
See how Capture works

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