6GK7343-1EX30-0XE0
Siemens CP 343-1 communications processor, Industrial Ethernet, PROFINET IO controller
Read from the product label
- Maker
- Siemens
- Part no.
- 6GK7343-1EX30-0XE0
- Serial / rev.
- as printed on your unit
Illustration of the unit type, not a photo of this part.
Delivery options
Siemens SIMATIC NET CP 343-1: communications processor connecting an S7-300 to Industrial Ethernet via ISO and TCP/IP, PROFINET IO controller or device, integrated 2-port switch.
- Manufacturer
- Siemens
- Manufacturer part no.
- 6GK7343-1EX30-0XE0
- Product family
- SIMATIC S7-300 PLC Modules
- Type
- Communications processor
- Lifecycle
- Discontinued: product cancellation (Siemens SiePortal), spare part only
- OEM successor
- Not stated
- Technical datasheet
- Data sheet
Technical specifications
- Manufacturer
- Siemens
- Manufacturer part no.
- 6GK7343-1EX30-0XE0
- Type
- Communications processor
- Application
- Industrial Ethernet and PROFINET for S7-300
- Used with
- SIMATIC S7-300 rack (S7-300 backplane bus)
- transfer rate / at the 1st interface
- 10 ... 100 Mbit/s
- number of interfaces / according to Industrial Ethernet
- 2
- number of electrical connections / at the 1st interface / according to Industrial Ethernet
- 2
- number of electrical connections / for power supply
- 1
- type of electrical connection / of Industrial Ethernet interface
- RJ45 port
- type of electrical connection / at the 1st interface / according to Industrial Ethernet
- RJ45 port
- type of electrical connection / for power supply
- 2-pole plugable terminal block
- type of voltage / of the supply voltage
- DC
- supply voltage / 1 / from backplane bus
- 5 V
- supply voltage
- 24 V
- supply voltage / external
- 24 V
- supply voltage / external / at DC / rated value
- 24 V
- supply voltage, current consumption, power loss / relative positive tolerance / at DC / at 24 V
- 20 %
- supply voltage, current consumption, power loss / relative negative tolerance / at DC / at 24 V
- 15 %
- consumed current / from backplane bus / at DC / at 5 V / typical
- 0.2 A
- consumed current / from external supply voltage / at DC / at 24 V / typical
- 0.16 A
- consumed current / from external supply voltage / at DC / at 24 V / maximum
- 0.2 A
- supply voltage, current consumption, power loss / power loss [W]
- 5.8 W
- ambient temperature / for vertical installation / during operation
- 0 ... 40 °C
- ambient temperature / for horizontally arranged busbars / during operation
- 0 ... 60 °C
- ambient temperature / during storage
- -40 ... +70 °C
- ambient temperature / during transport
- -40 ... +70 °C
- relative humidity / at 25 °C / without condensation / during operation / maximum
- 95 %
- ambient conditions / protection class IP
- IP20
- module format
- Compact module S7-300 single width
Show all 99 specificationsShow fewer
- width
- 40 mm
- height
- 125 mm
- depth
- 120 mm
- net weight
- 0.22 kg
- fastening method / S7-300 rail mounting
- Yes
- performance data / open communication / number of possible connections / for open communication / by means of SEND/RECEIVE blocks / maximum
- 16
- data volume / as user data per ISO connection / for open communication / by means of SEND/RECEIVE blocks / maximum
- 8 Kibyte
- data volume / as user data per ISO on TCP connection / for open communication / by means of SEND/RECEIVE blocks / maximum
- 8 Kibyte
- data volume / as user data per TCP connection / for open communication / by means of SEND/RECEIVE blocks / maximum
- 8 Kibyte
- data volume / as user data per UDP connection / for open IE communication / by means of SEND/RECEIVE blocks / maximum
- 2 Kibyte
- performance data / open communication / number of Multicast stations
- 16
- number of possible connections / for S7 communication / maximum
- 16
- performance data / multi-protocol mode / number of active connections / with multi-protocol mode
- 32
- performance data / PROFINET communication / as PN IO controller / number of PN IO devices / on PROFINET IO controller / operable / total
- 32
- performance data / PROFINET communication / as PN IO controller / number of external PN IO lines / with PROFINET / per rack
- 1
- data volume / as user data for input variables / as PROFINET IO controller / maximum
- 1 Kibyte
- data volume / as user data for output variables / as PROFINET IO controller / maximum
- 1 Kibyte
- data volume / as user data for input variables per PN IO device / as PROFINET IO controller / maximum
- 1433 byte
- data volume / as user data for output variables per PN IO device / as PROFINET IO controller / maximum
- 1433 byte
- data volume / as user data for input variables per PN IO device / for each sub-module as PROFINET IO controller / maximum
- 240 byte
- data volume / as user data for output variables per PN IO device / for each sub-module as PROFINET IO controller / maximum
- 240 byte
- performance data / PROFINET communication / as PN IO device / product function / PROFINET IO device
- Yes
- data volume / as user data for input variables / as PROFINET IO device / maximum
- 512 byte
- data volume / as user data for output variables / as PROFINET IO device / maximum
- 512 byte
- data volume / as user data for input variables / for each sub-module as PROFINET IO device
- 240 byte
- data volume / as user data for output variables / for each sub-module as PROFINET IO device
- 240 byte
- data volume / as user data for the consistency area for each sub- module
- 240 byte
- performance data / PROFINET communication / as PN IO device / number of submodules / per PROFINET IO-Device
- 32
- protocol / is supported / TCP/IP
- Yes
- product function / MIB support
- Yes
- protocol / is supported / SNMP v1
- Yes
- protocol / is supported / DCP
- Yes
- protocol / is supported / LLDP
- Yes
- configuration software / required
- STEP 7 V5.4 SP2 or higher / STEP 7 Professional V11 (TIA Portal) or higher
- identification & maintenance function / I&M0 - device-specific information
- Yes
- identification & maintenance function / I&M1 - higher level designation/location designation
- Yes
- product function / is supported / identification link
- Yes; acc. to IEC 61406-1:2022
- product function / web-based diagnostics
- Yes
- product feature / switch
- Yes
- product function / switch-managed
- No
- product function / with IRT / PROFINET IO switch
- Yes
- product function / configuration with STEP 7
- Yes
- product function / ring redundancy
- Yes
- product function / redundancy manager
- No
- product functions / redundancy / protocol / is supported / Media Redundancy Protocol (MRP)
- Yes
- product function / password protection for Web applications
- No
- product function / ACL - IP-based
- Yes
- product function / ACL - IP-based for PLC/routing
- No
- product function / switch-off of non-required services
- Yes
- product function / blocking of communication via physical ports
- Yes
- product function / log file for unauthorized access
- No
- product function / SICLOCK support
- Yes
- product function / pass on time synchronization
- Yes
- protocol / is supported / NTP
- Yes
- standards, specifications, approvals / certificate of suitability / CE marking
- Yes
- standards, specifications, approvals / certificate of suitability / UKCA marking
- Yes
- standards, specifications, approvals / certificate of suitability / KC approval
- Yes
- standards, specifications, approvals / certificate of suitability / Regulatory Compliance Mark (RCM)
- Yes
- standards, specifications, approvals / certificate of suitability / RoHS conformity
- Yes
- standards, specifications, approvals / certificate of suitability / EAC approval
- Yes
- standards, specifications, approvals / hazardous environments / header / certificate of suitability / ATEX
- Yes
- standards, specifications, approvals / hazardous environments / header / certificate of suitability / IECEx
- Yes
- standards, specifications, approvals / hazardous environments / header / certificate of suitability / ULhazloc approval
- Yes
- standards, specifications, approvals / hazardous environments / header / certificate of suitability / CCC / for hazardous zone according to GB standard
- Yes
- standards, specifications, approvals / hazardous environments / header / certificate of suitability / FM registration
- Yes
- standards, specifications, approvals / marine classification / header / Marine classification association / Polski Rejestr Statkow (PRS)
- Yes
- General Product Approval / Declaration of Con-
- China RoHS
- Approvals / Certificates / Manufacturer Declara-
- China RoHS FM CCC-Ex
- Approvals / Certificates / last modified:
- 3/10/2026
Technical documents (1)
Key features
- Industrial Ethernet, 10/100 Mbit/s, integrated 2-port switch (RJ45)
- ISO and TCP/IP transport
- PROFINET IO controller or PROFINET IO device
- S7 communication, fetch/write
- External 24 V DC supply
- Discontinued by Siemens on 1 October 2025; spare part only
About the Siemens 6GK7343-1EX30-0XE0
The Siemens 6GK7343-1EX30-0XE0 is the CP 343-1, Siemens's Industrial Ethernet card for the S7-300 that can also act as PROFINET IO controller. Siemens's data sheet gives an integrated two-port switch with RJ45 ports at 10/100 Mbit/s, ISO and TCP/IP transport, S7 communication and fetch/write, and operation as PROFINET IO controller or IO device, with an external 24 V DC supply. SiePortal lists it as product cancellation and its data sheet marks it as a spare part. Siemens names no direct successor for the order number; its route forward is migration to the S7-1500 with ET 200MP.
What is the 6GK7343-1EX30-0XE0 used for?
It connects an S7-300 to the plant Ethernet and can run PROFINET IO devices (remote I/O, drives) as their controller.
Lifecycle and successor
Discontinued: product cancellation (Siemens SiePortal), spare part only.
Before you order
What to photograph or confirm so the right unit is quoted.
Check the order number on the card and note its IP address and configuration from the STEP 7 project: the replacement must be given the same settings.
Alternatives for 6GK7343-1EX30-0XE0
The manufacturer’s named successor and other parts in the same family. None is a drop-in replacement without checking wiring, I/O and configuration for your installation.
| Product | Manufacturer | Type | Lifecycle | Relationship | Qty Available | Price | Action |
|---|---|---|---|---|---|---|---|
| Siemens 6ES7315-2AH14-0AB0CPU 315-2 DP, 256 KB, MPI and PROFIBUS DP | Siemens | PLC CPU | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7315-2EH14-0AB0CPU 315-2 PN/DP, 384 KB, MPI/DP and PROFINET | Siemens | PLC CPU | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7317-2EK14-0AB0CPU 317-2 PN/DP, 1 MB, MPI/DP and PROFINET | Siemens | PLC CPU | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7314-6EH04-0AB0CPU 314C-2 PN/DP compact CPU with integrated I/O | Siemens | PLC CPU | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7313-5BG04-0AB0CPU 313C compact CPU with integrated I/O, MPI | Siemens | PLC CPU | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7321-1BL00-0AA0SM 321 digital input, 32 DI, 24 V DC | Siemens | Digital input module | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7322-1BL00-0AA0SM 322 digital output, 32 DO, 24 V DC, 0.5 A | Siemens | Digital output module | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7331-7KF02-0AB0SM 331 analog input, 8 AI, U/I/thermocouple/resistance | Siemens | Analog input module | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7332-5HF00-0AB0SM 332 analog output, 8 AO, voltage/current | Siemens | Analog output module | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6ES7307-1EA01-0AA0PS307 power supply, 120/230 V AC in, 24 V DC 5 A out | Siemens | Power supply | Phase-out announced (Siemens SiePortal) | Same family | On Request | On request | View › |
| Siemens 6GK7343-1CX10-0XE0CP 343-1 Lean communications processor, Industrial Ethernet | Siemens | Communications processor | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
| Siemens 6GK7342-5DA03-0XE0CP 342-5 communications processor, PROFIBUS DP master/slave | Siemens | Communications processor | Discontinued: product cancellation (Siemens SiePortal), spare part only | Same family | On Request | On request | View › |
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