
Foreword 
 
Overview of the EL-1000-4GM product family 
The devices in the EL-1000-4GM product family are industrial Ethernet switches including 
management features that can be configured comfortably and easily via a web application. These 
enable low-cost installation of industrial Ethernet bus, star, and ring structures with switching 
functionality. 
 
In addition to the basic version of the EL-1000-4GM, which is delivered without fiberoptic 
connections, there are versions with two or four fiberoptic connections. These devices can be 
equipped with the most diverse transceivers for single mode or multi-mode featuring plug connector 
types ST or SC. 
 
Properties 
 Web application for configuration 
 Redundant voltage supply 12 VDC to 60 VDC with reverse voltage protection 
 Monitoring of individual input voltages via configurable alarms 
 Two relay contacts controlled via configurable alarms 
 10BASE-T/100BASE-TX (RJ45) and 100BASE-FX (MM or SM) 
 PHY and MAC completely compatible to IEEE 802.3, IEEE802.3u, and IEEE 802.3x 
 Auto MDI/MDI-X crossover function for 100BASE-T and 10BASE-T ports 
 Store-and-forward switching architecture with 2048 MAC address table 
 Quality of Service (QoS) with four priority queues 
 Prioritize via IEEE 802.1p Class of Service (COS), Type of Service (TOS)/DiffServ or port priority 
 Limitation of incoming and outgoing packets 
 Port mirror for TX or TX and RX packets 
 Port-based VLAN/802.1Q Tagged VLAN 
 Simple Network Time Protocol (SNTP) 
 Simple Mail Transfer Protocol (SMTP) for signaling alarms 
 Internet Gateway Management Protocol Snooping (IGMP Snooping) 
 Dynamical Host Configuration Protocol (DHCP) client function