User manual

EKI-1321/1322 User Manual 36
4.1.2.1 Auto Reconnect Property
Sometimes, the connection between Advantech serial device server and HOST is
interrupted by network traffic or powered-off by accident. In such a situation, the host
has to reconnect to Advantech serial device server. The function "Auto Reconnect" is
for this purpose, if the Advantech serial server loses the connection to its host, the
COM redirector will try to re-establish the connection while the host's AP access the
virtual COM port. The COM redirector DOES NOT re-establish the connection auto-
matically. When the connection is working again, the host's commands will be auto-
matically received by the Advantech serial device server again. Reconfiguration is
not necessary, so this function enhances the reliability of the system.
If the function is disabled, the connection cannot be re-established again unless the
COM redirector or host is restarted.
EKI series has two Ethernet ports. You can select two Ethernet port to establish two
Ethernet connections with one virtual COM port. It means that COM redirector will
use one connection with the COM port on device server to communicate. If this con-
nection failed, COM redirector will establish another Ethernet connection to commu-
nicate with device. The switch time will be 3 seconds ~ 5 seconds depending on the
network traffic and host status.
4.1.2.2 RVCOM Mode
When enabling this option with setting EKI device in the same operation mode, the
device will connect to specific host when device is ready. Before the device ready,
user still can use the mapped RVCOM port as usual, the com port but without cable
connected.