NPort 5600-8-DT/DTL Series Introduction to Operation Modes
ATTENTION
In Real COM mode, several hosts can have simultaneous access control over the device port. If necessary, you
can limit access by using the Accessible IP settings. Please refer to Chapter 4 for additional information about
Accessible IP settings.
RFC2217 Mode
RFC-2217 mode is similar to Real COM mode, since it relies on a driver to transparently map the device port to
a virtual COM port on a host computer. The RFC2217 standard defines general COM port control options based
on the Telnet protocol and supports one connection at a time. Third party drivers supporting RFC-2217 are
widely available on the Internet and can be used to implement virtual COM mapping.
TCP Server Mode
In TCP Server mode, the device port is assigned an IP:Port
address that is unique on your TCP/IP network. It waits for the
host computer to establish a connection to the attached serial
device. This operation mode also supports up to four
simultaneous connections, so multiple hosts can collect data
from the attached device at the same time.
Data transmission proceeds as follows:
A host requests a connecti
on to the device port.
Once the connection is established, data can be transmitted in
both directions
—from the host to the device, and from the
TCP Client Mode
In TCP Client mode, the NPort actively establishes a TCP
connection to a
specific network host when data is received
from the attached serial device. After the data has been
transferred, the NPort can automatically disconnect from the
host computer through the Inactivity time settings. Please
refer to Chapter 6 for details on t
hese parameters.
Data transmission proceeds as follows:
The NPort requests a connection from the host.
The connection is established and data can be transmitted in
both directions between the host and device.
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