Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 307)

1 Publication 1760-UM002B-EN-P - March 2005
Chapter
6
Pico-Link and Point-to-Point Serial
Connections
Introduction to Pico-Link All Pico GFX-70 units have Pico-Link terminals. The Pico-Link is designed
for eight stations.
Using the Pico-Link 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 Pico-Link 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.