SMI® Communication Options

Choosing the right communication options for how to send and receive data between a central computer and equipment within the automation system is critical. SMI offers a multitude of communications options including:

Main Protocols: Ethernet or DF1

Ethernet via Fiber, Hardwire
DF1 – Allen Bradley Protocol – Wire Signal

RS485 Standard Network

Transmission Types:

Fiber Optics
Radio – SMI offers various frequency options that are allowed in different countries around the world (such as 900 Mhz, 869 Mhz, 400 Mhz, etc.)
Hardwire

Choosing the right transmission type

Transmission Type	Radio	Fiber Optic	Hard Wire
Reasons for choice	• No digging • Ability to cover large areas • Mesh network • Many repeaters - auto configuring • Spread spectrum - immune to interference	• Fast response time • Long distance • Lightning proof • Ethernet - network usable for other devices • Long life - no degradation • Wide bandwidth	• Fastest response time (ex. communication occurs for 62 machines in 2 seconds) • Lightning protection • RS485 global standard for wiring • Use resort Ethernet backbone with terminal Servers

SMI provides the most comprehensive and reliable automation systems, and our service is second to none. For more information, contact one of our automation specialists.

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	“SMI Automation offers flexible and customizable software; high performance snow machines; proven communication options; accurate weather measurement; supporting equipment and instrumentation; integrated auxiliary equipment; and service that is second to none.”