Mitsubishi Electric MELSEC-Q Series - Page 75

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CHAPTER 4 FUNCTIONS
4
4.1 Cyclic Transmission Function 4.1.4 Direct access to link devices
(3) Differences from link refresh
*1 In the case of the Q02HCPU
*2 When the station-based block data assurance setting is enabled: Page 76, Section 4.1.5
*3 When conditions for 32-bit data integrity assurance are satisfied: Page 76, Section 4.1.5
Item
Access method
Link refresh Direct access
No. of steps 1 2
Processing speed
(LD B0 )
*1
High speed (0.034µs) Low speed (10 to 100µs)
Data reliability
In units of stations or in units of 32
bits
*2*3
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