Product details
Specifications
Recommand
Service & Policy

SIEMENSSIMATIC NET / S7-300

01 / PRODUCT DETAILS

6GK7343-1EX21-0XE0

CP 343-1 Industrial Ethernet Communication Processor

A communication processor for connecting a controller to the plant network.

ConditionNew Original

WarrantyOne year

In stock1

Official data sourcesSiemens CP 343-1 Manual, 02/2006 · Siemens S7-CP version history

Technical record

02 / SPECIFICATIONS

Product position

The processor handles Ethernet services and PROFINET communication for a supported controller while exposing diagnostic functions.

Communication resources

Ethernet interface1 × RJ45

Link rates10 / 100 Mbit/s

Total connections48 maximum

PROFINET roleIO controller; CBA support

Power & operating limits

External supply24 V DC ±5%

External supply current200 mA maximum

Power lossApproximately 5.8 W

Operating temperature0°C to +60°C

Ordering code note

EX21 denotes the device generation documented in manual B3S. Preserve the full article number; do not assume the EX30 hardware is identical.

System connection

Use a listed S7-300 or C7-300 CPU and a supported STEP 7 / NCM S7 version. PROFINET operation requires full-duplex network configuration.

Configuration storage

Optional exchangeable C-PLUG.

Access control

IP access protection support.

Service diagnostics

SNMP agent and diagnostic functions.

Applications & sourcing directory

03 / RECOMMAND

Controller networks

Linking automation stations in production.

Plant communications

Controller data exchange and operator access.

Legacy service

Replacement support for installed S7 networks.

Siemens / Building automation

Official references · Ordering guide

PXC16.2-E.A

PXC16.2-EF.A

PXC16.2-EF32.A

PXC16.3-UCMR.A

PXC24.2-EF.A

PXC24.2-EF32.A

PXC24.2-ER.A

PXC24.2-ERF.A

PXC24.3-UCMR.A

PXC36-E.A

PXC36-EF.A

PXC16.2-P.A

PXC16.2-PE.A

PXC24.2-P.A

PXC24.2-PE.A

PXC24.2-PEF.A

PXC24.2-PEF32.A

PXA-COMP.CON

PXA-ENC18

PXA-ENC19

DOLD / Monitoring & relay technology

Official references

UG 9400

MK 7830N

UG 6970

UG 6960

UH 6900

IR 5882

RN 5883

UG 9256

UG 9256/804

UG 9410

UG 9019

PF 9015

PF 9029

UH 9018

GF 9229

PH 9270

PK 9260

PI 9260

LH 5946

UG 6946

Independent product references; these are not direct substitutes for this product. Match each required variant to its manufacturer documentation.

From enquiry to dispatch

04 / SERVICE & POLICY

1Identify

Model, quantity and destination

2Verify

Suffix, condition and compatibility

3Quote

Documents, price and delivery

4Dispatch

Tracked warehouse release

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