304
Appendix A
Note
The auto-allocation function cannot be used for a device for which a connection has been set in the
Advanced Setup. To enable using the auto-allocation function, unregister the device and then register it
again.
Communications Cycle Time Setting
Communications Cycle Time Tab Page (
Device - Parameter
-
Edit
)
The communications cycle time setting and the communications cycle times calculated based on the currently
registered device information can be accessed on the Communications Cycle Time Tab Page.
Click the
Communications Cycle Time
Tab to display the following window.
The communications cycle time is set between 1 and 500 ms. Click the Default Setup Button or specify 0 ms to
enable automatic setting.
The communications cycle time for the automatic setting is calculated and displayed for each baud rate based
on the currently registered device information.
Note
The communications cycle time is the interval at which remote I/O communications are performed for
the same slave. Setting this time can prevent fluctuations in the communications cycle time based on
conditions. Setting a longer communications cycle time can prevent a slave with a slower processing
speed from being detected as having an error.
If actual remote I/O communications take shorter than the communications cycle time setting, remote
I/O communications will wait for the communications cycle time to expire. If the actual remote I/O com-
munications take longer, the remote I/O communications are performed in the actual time interval
regardless of the communications cycle time setting.
Summary of Contents for DeviceNet Safety
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