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Siemens SIMATIC NET CP 343-1 Communication Processor 6GK7343-1EX21-0XE0
Manufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Germany
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
- Overview
- Product Overview
- Key Functions
- Official Specifications
- Frequently Asked Questions
- Compatibility & Ordering Notes
- Hot Selling Models
- Recommended Products
Overview
Siemens · SIMATIC S7-300 / SIMATIC NET
6GK7343-1EX21-0XE0 SIMATIC NET CP 343-1 Communication Processor
The SIMATIC NET CP 343-1 adds Industrial Ethernet and PROFINET IO controller communication to an S7-300 station, supporting ISO transport, TCP/IP, UDP, S7 communication, SEND/RECEIVE, SNMP diagnostics and network initialization.
At a Glance
| Brand | Siemens |
|---|---|
| Model | 6GK7343-1EX21-0XE0 |
| Product Type | Industrial Ethernet communication processor |
| Core Function | Links an S7-300 station to Industrial Ethernet for PROFINET IO and standard communication services |
| Application or Compatible Series | SIMATIC S7-300 systems requiring Ethernet communication or PROFINET IO controller operation |
Exact Identification
Match 6GK7343-1EX21-0XE0 character by character and confirm the complete SIMATIC NET CP 343-1 Communication Processor designation.
Interface Arrangement
Confirm the installed supply, ports, field connections and required accessories before wiring the replacement.
Configuration Check
Preserve the approved engineering project, network parameters and application data used by the installed system.
Product Overview
The SIMATIC NET CP 343-1 adds Industrial Ethernet and PROFINET IO controller communication to an S7-300 station, supporting ISO transport, TCP/IP, UDP, S7 communication, SEND/RECEIVE, SNMP diagnostics and network initialization.
Adds a dedicated 10/100 Mbit/s Industrial Ethernet interface to the controller rack. Controls configured PROFINET IO devices through the approved PNIO communication blocks. Supports ISO transport, TCP/IP, UDP, S7 communication, Fetch/Write and SEND/RECEIVE.
Key Functions
S7-300 Ethernet Integration
Adds a dedicated 10/100 Mbit/s Industrial Ethernet interface to the controller rack.
PROFINET IO Controller
Controls configured PROFINET IO devices through the approved PNIO communication blocks.
Multiple Communication Services
Supports ISO transport, TCP/IP, UDP, S7 communication, Fetch/Write and SEND/RECEIVE.
Official Specifications
| Ethernet Transfer Rate | 10 to 100 Mbit/s |
|---|---|
| Industrial Ethernet Interfaces | 1 |
| Ethernet Connection | 1 x RJ45 port |
| Power-Supply Connection | 2-pole plug-in terminal strip |
| External Supply Voltage | 24 V DC |
| Maximum External-Supply Current | 0.15 A |
| Backplane-Bus Supply | 5 V DC |
| Maximum Backplane-Bus Current | 0.2 A |
| Optional Removable Media | C-PLUG |
| PROFINET Role | IO controller |
| Industrial Ethernet Protocols | ISO transport, TCP/IP and UDP |
| S7 Communication | Supported |
| SEND/RECEIVE Services | With and without RFC1006 |
| Network Services | DHCP, multicast and SNMP diagnostics |
| Time Synchronization | NTP CPU synchronization |
| Firmware Reference | V1.3.3 for all hardware versions |
| Operating Temperature | 0 to +60 °C |
| PROFINET Consistent User Data | Up to 128 bytes |
Frequently Asked Questions
Can 6GK7343-1EX21-0XE0 operate as a PROFINET IO controller?
Yes; configure the IO system in STEP 7 and use the approved PNIO send and receive blocks in the user program.
Which S7 rack is intended for 6GK7343-1EX21-0XE0?
Install it in a supported SIMATIC S7-300 central or expansion-rack configuration.
Which Ethernet media connection does 6GK7343-1EX21-0XE0 provide?
The processor provides one 10/100 Mbit/s RJ45 Industrial Ethernet connection.
Does 6GK7343-1EX21-0XE0 support ISO-on-TCP and UDP communication?
Yes; its standard communication services include ISO transport, TCP/IP, ISO-on-TCP and UDP.
Can 6GK7343-1EX21-0XE0 obtain its IP parameters from a DHCP server?
Yes; DHCP is supported when the project and network design use that addressing method.
What must be checked before replacing 6GK7343-1EX21-0XE0 with another CP generation?
Verify the hardware catalog entry, firmware, communication blocks, connection resources, addressing and any changed interface behavior.
What should be preserved before exchanging 6GK7343-1EX21-0XE0?
Back up the STEP 7 project, IP parameters, connection configuration, PROFINET IO assignment, access settings and C-PLUG contents.
Compatibility & Ordering Notes
Compatibility Checklist
- Use the exact EX21 hardware entry and supported firmware in the existing STEP 7 project.
- Keep the configured PNIO_SEND and PNIO_RECV interface and consistent-data limits unchanged unless the program is revalidated.
- Preserve IP settings, connection resources and C-PLUG data before replacing the processor.
