Advantech BB-VESR9 Series, Руководство пользователя

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VESR9xx Serial Servers
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HOW DELIMITERS WORK
When only Delimiter 2 (the end delimiter) is enabled, characters received
by the serial port are accumulated in a buffer. When the end delimiter is
received on the serial port, the buffered characters, including the end
delimiter, are sent to the network. All characters received after the end
delimiter are again buffered until another end delimiter is received.
When both Delimiter 1 (start delimiter) and Delimiter 2 (end delimiter) are
enabled, characters received by the serial port will be discarded until the
start delimiter character is detected on the serial port. The serial server
then buffers the start delimiter character and all subsequent characters
received after it until the end delimiter is detected. When the end
delimiter is received, the buffered characters, including the start and end
delimiters, are sent to the network.
When Delimiter Removal is enabled it removes the delimiter character(s)
before sending the other characters across the network.
DHCP
DHCP (Dynamic Host Configuration Protocol) is a protocol used on
special servers that supply IP addresses to network nodes on request.
When DHCP is enabled on the serial server, on power up it sends a
DHCP request to the DHCP server, which assigns a dynamic IP address,
subnet mask, and default gateway to the serial server.
When DHCP is disabled (static IP addressing), the IP Address, Subnet
Mask and Default Gateway fields must be set manually by entering the
appropriate addresses in these fields. If you do not know what addresses
to use in these fields, ask your network administrator.
Notes:
This product is factory defaulted to the DHCP mode. It is intended that
your network’s DHCP Server provide the IP address assignment. If
there is not a DHCP server on your network, the device will default to
IP address 169.254.102.39 .
A dynamic address assigned by the DHCP server may change if the
server loses the Ethernet connection or power is removed. If a device
on the network that normally communicates with the serial server is
configured to communicate with a specific IP address of the serial
server, and the IP address has been changed, the device will not be
able to communicate with the serial server.