Link Scan And Link Refresh - Mitsubishi Electric MELSEC SW1DNC-CCIEF-B User Manual

Link scan and link refresh

Link scan is executed 'asynchronously' with the link refresh which is executed by the CC-Link IE Field Network board driver.
Link refresh time
(Setting time)
Link refresh
Link scan
Setting method
Link refresh is executed at the interval of time set for "Link refresh cycle" on the "Driver setting" screen of CC IE Field Utility.
(Page 106 Driver setting)
Link refresh time
Link refresh time can be checked on the "Board Diagnostics" screen. (Page 117 Diagnosing Board)
The link refresh may not be executed in the set cycle because of such factors described below.
• Performance of the personal computer CPU
• Number of set refresh points
• Number of installed CC-Link IE Field Network boards
• Other running applications
• Other running boards
• If the link refresh time exceeds the link refresh cycle set on the "Device setting" screen, extend the link
refresh cycle. (Page 106 Driver setting)
• If the shortened link refresh time effects the operation of the applications, extend the link refresh cycle.
(Page 106 Driver setting)
(Setting time) (Setting time)
Link refresh
Link refresh
(Setting time)
5 FUNCTIONS
5.2 Cyclic Transmission
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