SENA Parani-BCD110V3 - Manual (Page 30)

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be disconnected selectively.
Table 4-3 ATH
ATH Disconnect all the slaves.
ATHx (ATH1, ATH2, ATH3, ATH4, ATH5, ATH6, ATH7) Disconnect the slave which belongs to
the TASK x.
ATHbdaddr (ATH000195000001) Disconnect the slave with specified BD
address.
4.3.4. ATOx, ATObdaddr
Using the ATO command, the communication status with the last active slave or a specific slave
can be set to online (only in Node Switching Mode).
Table 4-4 ATO
ATO Communicate with the slave recently
communicated.
ATOx (ATO1, ATO2, ATO3, ATO4, ATO5, ATO6, ATO7) Communicate with the slave which
belongs to the TASK x.
ATObdaddr (ATO000195000001) Communicate with the slave with
specified BD address.
Example of ATO command
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, 56, 57, 58
and 59. 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 output 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.
On communication after connecting
ATO1 – Communicating with #1 Slave
+++
OK
ATO000195000003 – Communicating with slave of BD 000195000003