9
3.4 One-to-many
communication
One-to-many communication occurs between a PC (or a controller) and multiple
general purpose soft starters.
In order to establish one-to-many communication, the RSGD units
must be first all powered-up with the specified supply voltage.
If the supply LED is green fixed on the soft starter, you can establish
communication with the soft starter.
The software provides two methods to establish one-to-many communication:
a.
Automatic connection
(more details in section 3.5)
b.
Manual connection
(more details in section 3.6)
For one-to-many communication, the device address of each RSGD
should be different.
For one-to-many communication, the baud rate and parity bit of each
RSGD should be the same.
For large networks, it is required to place a 12
0 Ω ¼ W resistor
between A (-) and the B(+) connections on the last soft starter, to
avoid possible communication problems.
