Accessing Command Interface; Using Bfm - Pepperl+Fuchs AS-i CC-Link Gateway Manual

AS-i CC-Link Gateway

Accessing command interface

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
Enable BFM
(set RY5 = 0)
Wait for BFM enable
acknowledge (RX5 = 0)
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