User's Manual

EKI-1351/EKI-1352/EKI-1521/1522/1524 User Manual 64
4.3.2.1 Auto Reconnect property
Sometimes, the connection between EDG device and HOST is interrupted by net-
work traffic or powered-off by accident. In such a situation, the host have to recon-
nect 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 AP access the virtual
COM port. The COM redirector DO NOT re-establish the connection automatically.
When the connection is working again, the host's commands will be automatically
received by the Advantech serial device server again. Reconfiguration is not neces-
sary, so this function enhances the reliability of the system.
if the function is disabled, the connection can not be re-established again unless the
COM redirector or host is restarted.
EKI-1521, EKI-1522, and EKI-1524 have 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 connection failed, COM redirector will establish
another Ethernet connection to communicate with device. The switch time will be 3
second ~ 5 second depending on the network traffic and host status.