ISPSoft User Manual

Chapter 16 Network Configuration and Data Exchange
16.4.5 Start Mode of an Ether Link
There are three start modes. Please refer to the table below for more information.
Start mode
Description
Always Stop During the operation of the PLC, no data exchange is performed.
Always Run When the PLC runs, data exchange is performed.
The performance of data exchange depends on a special relay in the PLC.
SM Flag
After users select SM Flag, they can set the initial state of the related special
relay.
*. Please refer to manuals or technical documents for more information about special relays related to Ether Links.
The execution of an Ether Link is based on the nodes in a network. If some of the ports that a node
has are connected to a network, users can set the start modes of the ports separately. When the
Ether Link constructed is executed, the system automatically distributes reading/writing work to the
ports according to the start modes of the ports. If a port is disconnected, the system will pass the
work belonging to the port to another port.
There are three ways to set the start mode of a node.
• Method 1
Right-click CPU information or module information, and then click Set Startup Mode on the
context menu.
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