Campbell NL241, Инструкция по эксплуатации

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Appendix C. NL241 Settings
C-8
TCP Serial Client
The device will maintain a TCP client connection with a remote server.
The IP address and port number of the remote server are configured in the
settings RS-232 TCP Serial Client IP Address and RS-232 TCP Serial
Client Port . Data received on the RS-232 port will be forwarded to this
TCP connection, and data received on the TCP connection will be
forwarded to the RS-232 port. The device will attempt to open a
connection with the remote server and if the connection fails to open, the
device will continue to retry at an interval of 60 seconds. If data arrives on
the RS-232 port when no TCP connection exists, the device will buffer the
data (up to 1500 bytes) and immediately attempt to open a connection to
deliver the data. If the remote server closes the connection due to error,
the device will make a best effort to save any data that was in process and
re-queue it to be sent on the next successfully-opened TCP connection.
PakBus
This port uses the PakBus® protocol.
MODBUS/TCP gateway
The device will listen for incoming Modbus/TCP connections from a
remote client. The port number of the listening connection is specified in
the RS-232 Service Port setting. The device will convert incoming
Modbus/TCP frames to Modbus/RTU and forward them to the RS-232
port. The device will wait for a response from the Modbus/RTU device
and forward the response back to the remote Modbus/TCP client over the
established TCP connection.
Disabled
This port will not be used.
RS-232 Service Port
This setting is used when the RS-232 Configuration is set to Serial Server or
MODBUS/TCP gateway . To communicate with a TCP/IP server, the client
application must open a socket to that server. The socket of a specific server is
uniquely identified by an IP address of the host where the server is running and
a port number associated with the server application on that host. This entry is
where the port number of the server is set. Ensure that the client application is
set to use the same port number as configured here. Most MODBUS/TCP
applications use port
502
(range 1 to 65535).
RS-232 Baud Rate
This setting specifies the baud rate of the RS-232 port. The connected device
must be set to communicate at the same baud rate.
RS-232 RTS
The NL241 asserts the RTS and DTR lines when doing RS-232
communications. This setting allows the user to disable the RTS line if needed
so that it will not be asserted. Some hardware will not function if the RTS line