Advantech Data Acquisition Modules ADAM 4000 - Manual (Page 15)

Chapter 2
Chapter 2 installation Guideline 2-5
Notice: User can refer our help file to see more details for explanation of
Utility operation.
ADAM Communication Speed
In ADAM series, the baud rate can be configured from 1200 bps to
38.4 Kbps. However, the baud rate of all modules in an RS-485
network must be the same.
ADAM Isolated RS-232/RS485 Converter (optional): ADAM-452x
When the host computer or terminal only has a RS-232 port, an
ADAM Isolated RS-232/RS-485 Converter is required. Since this
module is not addressable by the host, the baud rate must be reset using
a switch inside the module. The factory default setting is 9600 baud.
ADAM Repeater (optional): ADAM-451x
When communication lines exceed 4000 ft (1200 meter) or more
than 32 ADAM modules are connected, a repeater should be
implemented. In a network, up to eight Repeater modules can be
connected allowing connection up to 255 ADAM modules. As with the
Converter module, the Repeater module is not addressable by the host
and the baud rate must be reset by changing the switch inside the
module. The factory default setting is 9600 baud.