Advantech Adam - 4021, User Manual, Page: 20 / 286

ADAM-4000 Series User Manual 8
ADAM Communication Speed
In ADAM series, the baud rate can be configured from 1200 bps to 38.4 Kbps. How -
ever, 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 set -
ting 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 fac -
tory default setting is 9600 baud.