Advantech ADAM-4571 User Manual page 46

• Round-Robin Mode
Enabling "Response Timeout" parameter, the ADAM-4571/4570 will
operate in "Round-Robin mode". Each serial port supports up to five
simultaneous connections, so multiple hosts can transmit/receive data to/
from the same serial port simultaneously. Every host can transmit data to
the same serial port simultaneously, but the ADAM-4571/4570 will pro-
cess the data communication in order. The ADAM-4571/4570 will pro-
cess the first host's request and reply the response to the first host. The
ADAM-4571/4570 serial device server can determine the end of the
serial acknowledgement via response timeout. When ADAM-4571/4570
serial device server receives nothing from serial port after the setting of
response timeout, the device will reply the acknowledgement to the host
and then process the next host's request. While the connected hosts are
more and "Response Timeout" is long, the process time is much longer.
Frame Break is a very import parameter for Round Robin mode. This
parameter is the smart way to reduce inefficient waiting time and the
ADAM-4571/4570 can transmit data more efficiently. Disabling the
Frame Break function, the ADAM-4571/4570 will wait "Response Time-
out" period, whether the device have transmitted the data. During this
period, the commands from hosts will be queued and the ADAM-4571/
4570 just processes this command. Enabling "Frame Break", if the serial
port idle is longer than the "Frame Break" period, the ADAM-4571/4570
will assume the communication is completed and continue the next host's
query. This is an efficient way to reduce the waiting time and improve the
performance.
Peer Number
Set the number of network device which you want to connect. You can set
maximum sixteen network devices which you want to connect. You need
to fill out the IP Address and Port of network devices which you want to
connect.
ADAM-4570 Series User Manual 38