2.1.2 Operation of Cyclic Communication
The communication behavior in the cyclic communication varies according to the settings of
connections.
Input Only
Exclusive Owner
Input Only
Exclusive Owner
• For some target devices, "Exclusive Owner" setting is not available.
• When PLCs including FP0H are set as targets, "Input Only" setting is only available.
• For sending/receiving data between PLC and PLC, it is necessary to use two connections
and open them each other.
The transfer operations from "Data area" to "Send buffer" and from "Receive buffer" to "Data
area" in each device are called "Refresh".
Description
Data is sent in the input direction only (From target to originator)
Data is sent bi-directionally.
Originator
: Sends cyclic data.
2.1 Cyclic Communication Function
Target
: Refreshes data.
2-3