Processor Cp 343 1
Overview
Product sourcing insights & recommendations
The Siemens SIMATIC S7-300 CP 343-1 communications processor is currently in the discontinuation phase of its product lifecycle, with most variants (Standard, Lean, and Advanced) officially phased out between 2012 and 2024 SiemensUscontroltechSiemens. Despite being legacy hardware, a robust spare parts market persists, with substantial inventory available on B2B platforms ranging from approximately $250 to $1,300 per unit .
Market trends through 2026 indicate a rapid global shift toward Industrial Ethernet solutions (projected market size $85.7B), driven by Industry 4.0 and the adoption of modern successors like the S7-1500 series ResearchandmarketsPrnewswire. The CP 343-1 remains a "hot-selling" item for maintenance in brownfield facilities where full system upgrades are not yet feasible.
Detailed B2B listings and supplier data are available in the file below.
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Siemens Simatic S7 300 Cp 343 1 Communications Processor 6gk7343 1ex30 0xe0
Products · Top picks & verified manufacturers
6GK7343-1EX30-0XE0 Original SIEMENS SIMATIC S7-300 CP 343-1 PLC Communication Processor 6GK7343-1EX30-0XE0
Taizhou Songwei Cnc Machinery Co., Ltd.🇨🇳CN13 yrs
HYTECH SIEMENS PLC SIMATIC NET Communications Processor CP343-1 6GK7343-1EX30-0XE0 for S7-300 Series
Shenzhen Huiyao Electric Technology Co., Limitedverified🇨🇳CN7 yrs
Original New 6GK7343-1EX30-0XE0 Communications Processor CP 343-1 for Connection of SIMATIC S7-300 PLC
Quanzhou Linwangzhuang Technology Co., Ltd.🇨🇳CN1 yr
SIEMENS PLC SIMATIC NET Communications Processor CP343-1 6GK7343-1EX30-0XE0 for S7-300 Series
Shenzhen Yuke Chip Electronics Co., Ltd.verified🇨🇳CN1 yr
Siemens New Original PLC SIMATIC S7-300 Network Communication Processor Cp343-1 6GK7343-1EX30-0XE0 Industrial Ethernet Module
Shenzhen Xinshengyuan Electronics Co., Ltd.verified🇨🇳CN4 yrs
HYTECH SIEMENS PLC SIMATIC NET Communications Processor CP343-1 6GK7343-1EX30-0XE0 for S7-300 Series
Hunan Jingteng Automation Technology Co., Ltd.🇨🇳CN1 yr
6GK7343-1EX30-0XE0,6GK7 343-1EX30-0XE0,For Siemens PLC SIMATIC S7-300 CP343-1 Ethernet Communication Processor,2RJ45 10/100Mbps
Chengdu Yakaifeng Electronic Technology Co., Ltd.🇨🇳CN1 yr
Brand New 6GK7343-1EX30-0XE0 SIEMENS SIMATIC S7-300 CP343-1 Communication Processor 6GK7343-1EX30-0XE0 Fast Delivery
Quanzhou Nan'an Mingyu Automation Technology Co., Ltd.verified🇨🇳CN2 yrs
Siemens 100% Original New 6GK7343-1EX30-0XE0 PLC Communication Processor Module S7-300 CP 343-1 PROFINET Communication Module
Shenzhen Zhongcheng Electric Automation Co., Ltd.🇨🇳CN1 yr
6GK7343-1EX30-0XE0 CP343-1 S7-300 Communication Processor Processor PLC
Xiamen Qianzijie Network Technology Co., Ltd.🇨🇳CN3 yrs
Bingda Siemens 6GK7343-1EX30-0XE0 Communications Processor CP 343-1 for Connection of Simatic S7-300 PLC Supplies
Hunan Bingda Intelligent Equipment Co., Ltd.🇨🇳CN2 yrs
Original New 6GK7343-1EX30-0XE0 Communications Processor CP 343-1 for Connection of SIMATIC S7-300 PLC
Shanghai Yicheng Automation Technology Co., Ltd.verified🇨🇳CN2 yrs
A Brand New 6gk7343-1ex30-0xe0 Cp343-1 S7-300 Communication Processor Plc
Plc Bingda 6gk7343-1ex30-0xe0 Communications Processor Cp 343-1 for Connection of Simatic S7-300 Supplies for Warranty Product
Xiamen Bokong Automation Equipment Co., Ltd.🇨🇳CN1 yr
6GK7343-1EX30-0XE0 Simatic S7 PLC Communications Processor
Shenzhen Anke Automation Co., Ltd.🇨🇳CN3 yrs
Siemens PLC 6GK7343-1CX10-0XE0 SIMATIC NET CP 343-1 LEAN COMMUNICATION PROCESSOR for CONNECTING SIMATIC S7-300 Genuine Brand New
BRISYNERGY AUTOMATION PTE. LTD.SG16 yrs
6GK73431CX100XE0 Communications Processor CP 343-1 Lean 6GK7 343-1CX10-0XE0 Siemens 6GK7343-1CX10-0XE0
Shenzhen Xike Industrial Automation Co., Ltd.🇨🇳CN2 yrs
CNC Original SIEMEN PLC S7-300 INDUSTRIAL ETHERNET CP 343-1 Communications Processor 6GK7343-1GX31-0XE0
Jilin Batu Automation Equipment Company🇨🇳CN4 yrs
New Original 6GK7343-1EX21-0XE0 SIMATIC S7-300 Communications processor CP343-1 PLC 6GK7 343-1EX21-0XE0 Programmable controller
HONGKONG AIRUIJIE TRADING LIMITED🇭🇰HK1 yr
Siemens Brand New Original 6GK7343-1EX21-0XE0 CP343-1 S7-300 Communication Processor Ethernet Module
Shenzhen Yilixin Electronic Technology Co., Ltd.🇨🇳CN5 yrs
Original SIEMENS PLC SIMATIC NET Communications Processor CP343-1 Lean Ertec 6GK7343-1CX10-0XE0 for S7-300 Series
Zhengzhou Chengzhiduo Electric Technology Co., Ltd.verified🇨🇳CN5 yrs
6GK7343-1CX10-0XE0 CP343-1 Lean Communication Processor For S7-300 PLC Industrial Ethernet Module
6GK7343-1GX31-0XE0 6GK73431GX310XE0 Communications Processor S7-300 for Plc
Xiamen Global Kaijet International Trading Co., Ltd.verified🇨🇳CN1 yr
6gk7343-1gx20-0xe0 New S7-300 Cp343-1 Communication Processor Plc Brand-new, Genuine, in Stock, with a One-year Warranty.
Xiamen Qingyue Industrial Automation Co., Ltd.🇨🇳CN1 yr
6GK7343-1GX11-0XE0 S7-300 CP 343-1 Communications Processor PLC
6GK7 343-1GX11-0XE0 CP 343-1 IT Industrial Ethernet Communication Processor for PLC Network Connection
Quanzhou Chenbang Technology Co., Ltd.🇨🇳CN1 yr6GK7343-1GX31-0XE0 6GK73431GX310XE0 Communications Processor S7-300 for Plc
6gk7343-1gx20-0xe0 New S7-300 Cp343-1 Communication Processor Plc Brand-new, Genuine, in Stock, with a One-year Warranty.
6GK7343-1GX11-0XE0 S7-300 CP 343-1 Communications Processor PLC
6GK7 343-1GX11-0XE0 CP 343-1 IT Industrial Ethernet Communication Processor for PLC Network Connection
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Sources & References
28 sources cited · Verified industry data & reports
CP 343-1 - Support
Siemens
The CP 343-1 communications processor is intended for operation in a SIMATIC S7-300,. SIMATIC C7-300 automation system or SINUMERIK 840D power line. It allows ...
Description of the CP 343-1 Lean - Support
Siemens
The CP 343-1 Lean communications processor is designed for operation in an. S7-300 programmable logic controller. It allows the S7-300 to be attached to.
Siemens - 6GK7343-1EX30-0XE0 COMMUNICATIONS ...
Kempston Controls
The Siemens 6GK7343-1EX30-0XE0 CP 343-1 is a communications processor for SIMATIC S7-300, providing Ethernet connectivity through ISO and TCP/IP protocols.
SIPLUS S7-300 CP 343-1 Advanced - SiePortal - Siemens
Siemens SiePortal
The CP 343-1 Advanced is used to connect the SIMATIC S7-300 to Industrial Ethernet networks. With its own processor, it relieves the CPU of communications tasks ...
Siemens CP 343-1 Communications processor, 2-port switch
Rubicon Industrial Automation
Communications processor CP 343-1 for connection of SIMATIC S7-300 to Industrial Ethernet via ISO and TCP/IP, PROFINET IO controller or PROFINET IO device, ...
6GK7343-1CX10-0XE0 - Siemens Product Information
siemens-info.com
spare part - - communications processor CP 343-1 Lean for connection of SIMATIC S7-300 to Industrial Ethernet via TCP/IP and UDP, multicast, send/receive ...