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Appendix C
Auto Read/Auto Write
Use of Auto Read and Auto Write Commands
In
general, read and write commands are used while DCs are stationary
. Auto commands are used while DCs are
in motion.
Read and Write Commands
• Communications
distance can be greater than when DC is in motion, and so accurate communications can be
performed.
R/W
Head
Stationary
DC
Auto Read and Auto Write Commands
• When the auto commands are used, DC proximity is detected automatically.
• If
DC motion is slow and positioning is accurate, communications can be done with few limitations on distance.
• When an auto command is sent while the DC is stationary, the DC Not Present indication is not issued.
R/W
Head
In motion
DC
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