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Siemens 6GK7343-5FA01-0XE0 SIMATIC NET CP 343-5 PROFIBUS Processor

Siemens 6GK7343-5FA01-0XE0 SIMATIC NET CP 343-5 PROFIBUS Processor

Product Name: SIMATIC NET CP 343-5 PROFIBUS Communications Processor

Brand Name: Siemens

Model Number: 6GK7343-5FA01-0XE0

Place of Origin: Germany

Warranty: 12 Months

Whatsapp: +86 18020776782

Email: [email protected]

Appurtenance:

siemens 6gk7343 5fa01 0xe0 simatic net cp 343 5 profibus communications processor-1

Overview
Protocol Mapping
Description
Specifications
PROFIBUS Recovery
Commercial Term
Contact info
FAQ
Other Products
Recommended Products

Single-width S7-300 communication processor for PROFIBUS FMS, S5-compatible, PG/OP and S7 services

Protocol checkpoint: List every active communication service and partner, confirm STEP 7 V5.1 SP3 plus NCM S7 for PROFIBUS, and preserve the station address, baud rate, rack slot, external 24 V supply and segment termination.

The CP 343-5 connects an S7-300 station to PROFIBUS through a 9-pin RS485 port at up to 12 Mbit/s. It supports up to 16 open SEND/RECEIVE connections, 16 FMS connections and 16 S7 communication connections.

Protocol Mapping

Identify the application service behind each partner connection before changing the CP or station project.

Connection list

Record FMS, S7 and SEND/RECEIVE partners, addresses, blocks and expected connection state.

Resource check

Compare active and configured connections with the CP limits before adding or restoring partners.

Engineering set

Retain the STEP 7 and NCM S7 project, hardware catalog entry and online diagnostic evidence.

Description

6GK7343-5FA01-0XE0 is a compact S7-300 CP for legacy PROFIBUS communication. It should be selected by the required FMS, S5-compatible, PG/OP, S7 and SEND/RECEIVE services rather than by connector appearance alone.

Troubleshooting should separate module power and rack communication, the RS485 physical layer and the configured protocol connection. A reachable node does not prove that an FMS or SEND/RECEIVE connection is correctly restored.

Specifications

Product type designation	SIMATIC NET CP 343-5
Order number	6GK7343-5FA01-0XE0
PLC platform	SIMATIC S7-300
PROFIBUS interface	9-pin Sub-D, RS485
Transfer rate	9.6 kbit/s to 12 Mbit/s
Open communication	Up to 16 SEND/RECEIVE connections
FMS communication	Up to 16 connections
S7 communication	Up to 16 connections
Multi-protocol mode	Up to 48 active connections
Power	24 V external plus 5 V backplane; 5 W loss
Engineering	STEP 7 V5.1 SP3 plus NCM S7 for PROFIBUS
Dimensions / weight	40 x 125 x 120 mm; 0.3 kg

PROFIBUS Recovery

Restore the physical segment first, then verify each configured communication service independently.

Power and mode

Check external 24 V, backplane operation and the mode selector before tracing protocol faults.

Bus baseline

Record address, baud rate, cable route, shield and termination at the true segment ends.

Service test

Test PG/OP access, S7 connections, FMS and SEND/RECEIVE separately against known partners.

Commercial Term

Quotation

Current price and availability

Payment

T/T or agreed terms

Lead time

Confirmed with quotation

Shipping

DHL, FedEx, UPS or agreed freight

Warranty

12 months

Contact info

CONTACT

Jim Pei

[email protected]

+86 180 2077 6782

FAQ

How can I confirm that 6GK7343-5FA01-0XE0 supports the services used by my S7-300 application?

Review the STEP 7 and NCM S7 project for FMS, S7, PG/OP and SEND/RECEIVE connections. Confirm partner addresses, called blocks and connection counts instead of assuming that every PROFIBUS CP provides the same service set.

What should I document before replacing 6GK7343-5FA01-0XE0?

Archive the complete station and NCM project, online blocks and diagnostics. Record rack slot, CP version, external 24 V wiring, PROFIBUS address and baud rate, 9-pin connector, shield, termination and every configured partner.

Why can PG access work through 6GK7343-5FA01-0XE0 while production data is still unavailable?

PG/OP access and the application connection are separate services. Check the failed FMS, S7 or SEND/RECEIVE connection, partner address, blocks, resource count and partner state before changing the physical network.

How should I diagnose all PROFIBUS partners disappearing from 6GK7343-5FA01-0XE0?

Start with external 24 V, backplane status and the CP operating mode, then inspect the 9-pin connector, cable shield and both segment terminators. Compare the configured address and baud rate only after the physical path is verified.

What can cause intermittent communication on 6GK7343-5FA01-0XE0 at higher baud rates?

Inspect connector seating, shield continuity, cable routing, segment length, repeaters and termination. Capture which partners fail first and the CP diagnostics; do not mask a physical-layer problem by repeatedly reloading the project.

What information is needed to source a reliable replacement for 6GK7343-5FA01-0XE0?

Provide the complete order number, CPU and rack, hardware and firmware information, STEP 7 and NCM versions, protocol services, connection counts and clear photos of labels and wiring. This prevents selection of a CP 343 variant with a different function set.

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