6GK7443-1EX20-0XE0 Siemens CP 443-1 Ethernet Module

6GK7443-1EX20-0XE0 Siemens CP 443-1 Ethernet Module | New Stock

Availability: 99 left in stock

Siemens 6GK7443-1EX20-0XE0 SIMATIC CP 443-1 Communications Processor Configured for connection of SIMATIC S7-400 to Industrial Ethernet over ISO, TCP/IP, and...

SKU: 6GK7443-1EX20-0XE0

Manufacturer: Siemens
Product No.: 6GK7443-1EX20-0XE0
Product Type: Communications Processors
Product Origin: Germany
Payment:T/T, Western Union
Weight: 700g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Siemens 6GK7443-1EX20-0XE0 SIMATIC CP 443-1 Communications Processor

Configured for connection of SIMATIC S7-400 to Industrial Ethernet over ISO, TCP/IP, and UDP, the Siemens 6GK7443-1EX20-0XE0 (6GK7443-1EX20-0XE0 Communications Processor CP 443-1) provides direct physical and electrical execution. The module manages dedicated automation network services across S7 communication, fetch/write, and SEND/RECEIVE protocols while acting as a hardware gateway between the controller backplane and external distributed field architectures.

Hardware Specifications

Parameter	Specification
Model	6GK7443-1EX20-0XE0
Brand	Siemens
Origin	Germany
Weight	0.7 kg (Net Weight)
Dimensions	25 x 290 x 210 mm
Operating Temp	0 deg C to +60 deg C
Power Consumption	1.4 A via 5 V DC backplane bus
Power Loss	7.25 - 8.6 W
Number of Interfaces	2 x RJ45 ports (Industrial Ethernet)
Transfer Rate	10 ... 100 Mbit/s (Autosensing)
Max Modules per CPU	14 total (Up to 4 as PROFINET IO Controllers)
Active Connections	128 multi-protocol maximum
Protection Class	IP20

Deterministic Industrial Ethernet and Switch Architecture

The communications processor utilizes an integrated ERTEC 400 real-time switch to execute deterministic network distribution directly through its dual RJ45 interfaces. It operates natively as a PROFINET IO Controller, handling up to 64 open communication links via SEND/RECEIVE blocks with and without RFC1006 multicast compliance. The hardware configuration executes backplane bus communication velocity licenses to sustain concurrent multi-protocol traffic across DHCP, SNMP V2, and web-based diagnostics. The dedicated embedded ASIC guarantees firmware flash compatibility across legacy S7-400 racks, providing access protection through hardware-enforced IP access lists while suppressing packet collision cross-talk during heavy network loop traffic.

Frequently Asked Questions

Q: How is the initial IP address assigned to the 6GK7443-1EX20-0XE0 during commissioning?

A: The module supports initialization via LAN. The network configuration can be deployed dynamically using a DHCP server, or assigned statically via STEP 7 engineering software using the Media Access Control (MAC) address over standard ISO transport protocols.

Q: What are the architecture limits when deploying multiple CP 443-1 modules per S7-400 CPU?

A: A maximum of 14 communication processors can be installed per individual S7-400 CPU rack assembly to scale total I/O density. However, out of these 14 modules, a maximum of only 4 units can be concurrently initialized and operational as active PROFINET IO Controllers.

Field Installation Guidelines

Rack Slot and Power Isolation: Insert the module only when the S7-400 rack backplane power is fully isolated. Lock the upper and lower fastening screws into the chassis sub-rack to ensure continuous electrical engagement with the 5 V DC backplane power rails and to mitigate terminal contact resistance.
Network Cable Routing and Strain Relief: Connect standard Cat5e or industrial-grade shielded twisted-pair (STP) cables to the integrated RJ45 ports. Route all communication lines through dedicated low-voltage wire trays, maintaining a minimum physical separation of 100 mm from three-phase AC motor leads and power switching components to eliminate electromagnetic noise injection.
Shield Grounding and Environmental Limits: Verify that the RJ45 cable shield makes continuous connection with the internal metallic frame of the module housing. The host enclosure must maintain adequate vertical convective airflow to keep local ambient operating temperatures between 0 deg C and +60 deg C, preventing thermal degradation under the maximum 8.6 W power loss loading.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.