The Allen-Bradley 1783-LMS8 is an Ethernet communication hardware. This component is categorized as a lightly managed Ethernet switch, primarily used to implement industrial Ethernet I/P network for implementing Distributed I/O architecture, data exchange between Human Machine Interface (HMI), Supervisory Control and Data Acquisition (SCADA) and communication between other automation devices to implement messaging functions.

The 1783-LMS8 mainly features Eight (8) Ethernet copper ports that support 10/100 mbps communication speed.

This ethernet switch supports industrial system protocol such as Common Industrial Protocol (CIP) which is capable of implementing Two (2) types of messaging including Explicit and Implicit (I/O). Maximum of 128 connections is supported by this module.

The supports DIN rail mounting and powered by an external 24 VDC supply voltage with input supply voltage range of 12-24VDC and input current range of 0.4-0.2 A (SELV). It has power consumption of and power dissipation of 5.3 Watts.

For wiring of ethernet connection, it requires use of am RJ45 connector that complies to the IEC 60603-7, 2 or 4 pair Category 5e minimum cable according to TIA 568-B.1 or Category 5 cable according to ISO/IEC 24702. For input power connection, recommended cable is 1.3…0.82 mm2 (16…18 AWG) solid or stranded copper wire with insulation rating of 30 degrees C (86 degrees F). For grounding connection, recommended wire is 5.2-3.3 mm2 (10...12 AWG) solid or stranded copper wire. Operate this switch at a temperature range of -20 degrees C - +60 degrees C (-4 degrees F < Ta < +140 degrees F).

Manufactured by Allen-Bradley, the 1783-LMS8 switch is an 8-port Stratix 2500 switch. The 1783-LMS8 switch is classified as a lightly managed switch. The 1783-LMS8 switch is particularly ideal for installation in environments that do not require any fiber ports. The 1783-LMS8 switch is enclosed in an IP 30 rated enclosure. The rated power input is 12 to 24 Volts DC voltage and 0.4 to 0.2 Amps while the unit’s rated power consumption is 5.3 Watts. The manufacturer recommends the RJ45 connectors rated by the IEC 60603-7 standards and 2-pair or 4-pair category wire for the switch. The 1783-LMS8 switch features eight 10/100 Mbps rated Fast Ethernet copper ports, and the switch is built to ensure the logical segmentation of wires and other devices in a single switch, reducing the total number of required switches in a system.

The 1783-LMS8 switch also supports the SNMP, alarm relay, and the Syslog features. Through the Syslog feature, the user is able to monitor errors, ensuring that there is no interrupted connectivity. To ensure a secure network, the 1783-LMS8 switch uses the port security that ensures disabling of the ports or control end device connectivity based on the assigned Mac Address. For an enhanced level of security, the unit features SSH and HTTP. To achieve optimal performance, it is critical that the device is operated under the proper ambient temperature conditions. The recommended ambient operating temperature range for the 1783-LMS8 switch is -20 to 60 degrees Celsius. The recommended non-operating temperature range is -40 to 85 degrees Celsius, and the ambient relative humidity range is from 5% to 95%, non-condensing.