If the count was set to 4, then Q1, Q2, Q3, Q4 of xLogic
(Slave No.1) would be read and saved flags F1 to F4 of
the Master CPU.
F is bit type flag. It can be used to receive bit data from a
slave device.
Example 2: Get AI value from Slave 2 (xLogic with station
No.2) and write the data to AQ12, the second analogue
output of Ext. 1
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