6GK7343-1CX10-0XE0

Technical specifications

Manufacturer

Siemens

Manufacturer part no.

6GK7343-1CX10-0XE0

Type

Communications processor

Application

Industrial Ethernet 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

Technical documents (1)

• Siemens data sheet 6GK7343-1CX10-0XE0

Key features

• Industrial Ethernet, 10/100 Mbit/s, two RJ45 ports
• TCP/IP and UDP, send/receive with and without RFC 1006, fetch/write
• S7 communication (server)
• PROFINET IO device
• External 24 V DC supply
• Discontinued by Siemens on 1 October 2025; spare part only

About the Siemens 6GK7343-1CX10-0XE0

The Siemens 6GK7343-1CX10-0XE0 is the CP 343-1 Lean, the Lean version of Siemens's Industrial Ethernet card for the S7-300. Siemens's data sheet gives two RJ45 ports at 10/100 Mbit/s, TCP/IP and UDP with send/receive (with and without RFC 1006) and fetch/write, S7 communication as a server and PROFINET IO device operation, 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 6GK7343-1CX10-0XE0 used for?

It gives an S7-300 CPU without Ethernet a network connection: to SCADA and HMI, to other PLCs, and to a PROFINET controller as an IO device.

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.