Smart Distributed System (SDS) protocol is originally developed by Honeywell

Honeywell

Honeywell International, Inc. is a major conglomerate company that produces a variety of consumer products, engineering services, and aerospace systems for a wide variety of customers, from private consumers to major corporations and governments....

 & currently supported by Holjeron. SDS is an open event-driven protocol used over CAN

CAN

- Organizations :* Andean Community of Nations, a South American trade bloc with Bolivia, Colombia, Ecuador and Peru* Campus Antiwar Network, an American network of students opposing the occupation of Iraq...

based industrial network. It is used for a highly reliable Smart device-level network. The SDS Application Layer Protocol is optimized for Smart Sensors and Actuators, where Configuration, Diagnostic, and Process information can be embedded cost-effectively in a very small footprint.

Key Features

• Supports communication rates up to 1 Mbps.
• 1500 ft maximum distance at 125 kBaud (longer with Bridge).
• Can support 64 maximum electrical loads (Nodes) per network without repeater & 126 with repeater.
• Uses 12-24VDC, 2 power wires + 2 communication wires + shield
• Multiple physical layers topologies
• Can have 126 logical addresses (logical devices) - not related to physical location on the network
• Each logical device can have 32 objects containing attributes, actions and events
• Proven event driven architecture for maximum throughput (<1ms)
• Event-Driven, Master-Slave, Multicast and Peer to Peer Services
• Network heartbeat to insure device health every 2.5 seconds
• Have Robust Network Management capabilities (Microsoft architecture)

External links

• SDS Testing