AS-i CC-Link Gateway
Accessing command interface
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.4.20
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12.
Accessing command interface
12.1
Using BFM
This example shows one method to access command interface when it is
mapped into the cyclic Buffer Memory Area (when using VBG-CCL-G4F mode or
CC-Link V1 mode):
BFM used for I/O data
(RY4 = 0)
Disable BFM
(set RY5 = 1)
Wait for BFM disable
acknowledge (RX5 = 1)
Switch to mailbox mode
(set RY4 = 1)
Wait for mailbox mode
acknowledge (RX4 = 1)
Write command interface request data
(including command and changed
toggle bit) to RWw area
1
Enable BFM
(set RY5 = 0)
Wait for BFM enable
acknowledge (RX5 = 0)
