Omron SYSMAC 3G8F7-CLK13-E Operation Manual page 26

Overview
Flexible Internetwork Connections
Improved Error Handling (RAS Functions)
Error Log and Data Link
Status Display
Polling Node Backup
Function
Node Bypass Function
Optical transmission path
CLK
6
• PCI Bus Controller Link Support Board
Optical Ring System with H-PCF Cables
• Controller Link Unit for CS-series Programmable Controllers
• Controller Link Unit for CVM1/CV-series Programmable Controllers
• PCI Bus Controller Link Support Board
Optical Ring System with GI Cables
• CS-series and CJ-series Programmable Controllers
• CVM1/CV-series Programmable Controllers
• PCI Bus Boards
Optical System with H-PCF Cables
• Controller Link Unit for CS-series and CJ-series Programmable Con-
trollers
• ISA Bus Controller Link Support Board for IBM PC/AT or compatibles
The Controller Link Network can be connected to another network (Ethernet,
SYSMAC NET Link, SYSMAC LINK, or another Controller Link network)
through a CS-series or CV-series PC. By installing Ethernet, SYSMAC NET
Link, or SYSMAC LINK, or Controller Link Communications Units on the same
CS1-series PC or CV-series PC, a message service can be created with
nodes in the interconnected networks through that PC. Up to three network
levels are possible.
An error log enables quick handling of errors by recording the time the error
occurred and error details. The current Controller Link Unit and Support Board
status are also available, as are the data link and network status.
When an error occurs in the polling node that controls the Controller Link Net-
work, another node automatically becomes the polling node with the help of
the Polling node backup function. This prevents an error at a single node from
influencing other nodes on the network, achieving a highly reliable system.
In an Optical or Optical Ring Controller Link Network, data communications
can be continued by bypassing the node, even when a node in the communi-
cations line malfunctions or the PC or computer power supply is turned OFF.
This prevents the whole network system from being affected by a node mal-
function or power interruption.
To use the bypass node function, backup power must be supplied to the Con-
troller Link Unit/Support Board.
CLK
PC PC
Bypass
CLK
PC
Power interruption
24-VDC
Backup Pow-
er Supply
Section 1-1
CLK
IBM PC/AT or
compatible