Logosol Multifunctional Servo Drive LS-231g3SB
Doc # 712231005 / Rev. C, 09/13/2018
Addressing
Rather than hard-wired or switch-selected address, the host dynamically sets the address of each LS-
231g3SB with the aid of the daisy-chained
A-in
and
A-out
lines. This allows additional drives to be added
to a RS-485 network with no hardware changes.
A-in
of the first Drive is pulled low, its communication is
enabled and the default address is 0x00. When the “
Set Address”
command is issued to give this Drive
new unique address, it will lower it’s
A-out
pin. Connecting
A out
pin to the
A in
pin of the next servo drive
in the network will enable its communication at default address of 0x00. Repeating this process allows a
variable number of controllers present to be given unique addresses.
In any non-LDCN modes, each LS-231g3SB should have a unique fixed address. In this case, the host
can establish communication with a controller without sending Hard Reset command.
LDCN Network
Group Addresses
In addition to the individual address, each controller has a secondary group address. Several LS-231g3SB
controllers may share a common group address. This address is useful for sending commands, which
must be performed simultaneously by a number of drivers (e.g.
Start motion, Set Baud Rate
, etc.). When
a LS-231g3SB
receives a command sent to its group address, it will execute the command but not send
back a status packet. This prevents data collisions on the shared response line. When programming group
addresses, however, the host can specify that one member of the group is the “group leader”. The group
leader will send back a status packet just like it would for a command sent to its individual address. The
group address is programmed at the same time as the unique individual address using the
Set Address
command.
U
S
B
i
n
te
fa
c
e
Rx,Tx terminators off
=
Rx, Tx terminators off
=
Rx, Tx terminators on
=
Rx, Tx n
= O
Rx, Tx
= Off
Rx, Tx
= Off
Logosol, Inc.
•
2833 Junction Ave., Ste. 101
•
San Jose, CA 95134
•
Tel: (408) 744-0974
•
www.logosolinc.com
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