User's Guide

40
ATOx (ATO1, ATO2, ATO3, ATO4)
Communicate with the slave which belongs to the TASK x.
ATObdaddr (ATO000195000001)
Communicate with the slave with specified BDaddress.
4.4. Notes
When large data exchange occurs in Multi-drop mode without flow-control enabled, the master unit may
experience data loss. It may also experience occasional disconnections and/or system rebooting
especially when bi-directional communication happens. It is strongly recommended to perform extensive
performance test before any real world field applications.
The master unit would try to connect all slave units specified by S-register 46, 54, 55 and 56. If non-
existing or inactive slave addresses are entered in these S-registers, the overall performance will
degrade due to frequent connection trials to non-existing/inactive slaves. It may also force
disconnections for overall performance and outputs disconnect messages repeatedly.
Node-switching mode provides nearly equivalent performance as single connection mode. It is always
recommended to use flow-control for both of Multi-Drop Mode and Node Switching Mode.