11
PROGRAMMING
11
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11.2 Cyclic Transmission
11.2 Cyclic Transmission
The link scan of the CC-Link IE Controller Network and the execution of the user program
are operated asynchronously.
When using data more than 32 bits (double words) indicated below, new data and old data
may be mixed in units of 16 bits (1 word) depending on the execution timing of a user
program.
• Floating point data
• Current values and command speed of the positioning module.
CC-Link IE Controller Network provides the following functions for not mixing new data
and old data.
• 32-bit data assurance
32-bit data are assured by link refreshing the link device whose conditions of 32-
bit data assurance are satisfied.
For details, refer to the following manual.
CC-Link IE Controller Network Reference Manual
• Station-based block data assurance
Cyclic data are assured per station by handshaking between the personal
computer and CC-Link IE Controller Network board, and executing the link
refresh.
For details, refer to the following.
