Beckhoff EL6631 Programmable Logic Controller PLC Featuring Two RJ45 Ports Supporting Line and Tree Topologies for Flexible Network Design

Price Negotiable

Price: Negotiable

MOQ: 1 pcs

Delivery Time: 5-7 days

Brand: Beckhoff

Product Description

Basic Information

Model Name: EL6631 (EtherCAT Terminal, 2-port PROFINET RT Controller)
Manufacturer: Beckhoff Automation (Germany)
Product Status: Regularly available (but not recommended for new projects; the alternative is EL6633)
Mounting Method: 35mm DIN rail (EN 60715), IP20 protection
Dimensions: Standard EtherCAT terminal size (12mm wide)
Weight: Approx. 75 g
Power Supply: Pure E-bus power supply, no external power required; typical E-bus current 400 mA
Electrical Isolation: 500 V on E-bus/Ethernet side

Core Technical Parameters

Parameters	Specifications
Communication Protocol	PROFINET RT (Real-time), conforming to Conformance Class B
Ethernet Interfaces	2 RJ45, 100BASE-TX, built-in switch, line topology support; maximum single-segment twisted pair cable length 100m
Maximum PROFINET RT devices	15
Minimum RT cycle	1 ms
Maximum process data	1 kB input + 1 kB output
Diagnostic functions	Status LEDs (running, error, port link); supports LLDP and SNMP network diagnostics
Operating temperature	0～55°C; Storage: -25～+85°C
Relative humidity	95% non-condensing
Certifications	CE, CCC, UL, ATEX, IECEx, DNV

Configuration and wiring:

No DIP switches required, configured via TwinCAT System Manager / Beckhoff controller software
Two RJ45 ports support line topology/tree topology; X1/X2 are switching ports, cascadable
As a terminal in an EtherCAT chain, it can be mixed with other EL/KL terminals on the same rail
Derivative Model: EL6631-0010 (PROFINET RT Slave Version, 3-Port Switch)

Application Scenarios

Existing EtherCAT master systems requiring expansion to PROFINET RT subnets (e.g., machine tools, production lines, robots)
Heterogeneous network integration in factories, reducing the need for additional gateways; communication interfaces in hazardous areas (ATEX/IECEx Zone 2/22)