Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual page 976

Basic I/O Unit Instructions
000000
Data link area
W000
000000
Equals Flag
W001
Equals Flag
Controller Link Unit
with unit number 1
DLNK
Refresh
&1
The actual timing for data link area refreshing in this example is as follows:
• When transmitting: Data is transmitted over the network the next time that
the token right is acquired. (The transmitted data is delayed up to 1 com-
munications cycle time max.)
• When receiving: The data that is input was received from the network the
last time that the token right was acquired. (The data received is delayed
up to 1 communications cycle time max.)
Examples of Data Transfer Processing:
• Transferring Data from the Previous I/O Refreshing
Cycle time
One communications
cycle time
DLNK
&1
W001
W000
Data link
refreshing
Controller Link
Refreshing data link
data within PLC
Data transfer processing
Data link
Section 3-23
937