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6
EZ-NET Network, COM-LINK Serial
Connection
Introduction to EZ-NET
All EZD units have an EZ-NET network interface connection.
This network is designed for eight stations.
Using the EZ-NET you can:
• Process additional inputs and outputs.
• Implement faster and improved control using decentralized
programs.
• Synchronize date and time
• Read and write inputs and outputs.
• Send values to other stations.
• Receive values from other stations.
• Load programs from or to any station.
The EZ-NET network is based on the CAN network
(Controller Area Network). CAN is specified by the ISO 11898
standard. CAN has the following in-built features:
• Message oriented transmission protocol.
• Multimaster bus access capabilities with non-destructive
bit-wise bus arbitration via priority messaging (Arbitration:
An instance which defines which hardware can use the bus
next).
• Multicast broadcast messaging with receiver side message
filtering.
• High level of real-time capability (short reaction time for high
priority messages, short fault message get times).
• Functionality in environments with severe interference
(short block lengths).
• High level of error security.
