Campbell-scientific NL240 Wireless Network Link Interface Manual de usuario descargar pdf (Pagina 58)

Appendix C. NL240 Settings

Wireless Networks in Area

This is a read-only field that lists the networks available in the area.

Information listed for each network is: SSID, RSSI / Signal Strength, Channel,

Security.

If the NL240 is creating an ad hoc network, wireless networks in

the area may not be displayed.

C.3 RS-232 Tab

RS-232 Configuration

This setting controls which process will be associated with the RS-232 port.

The following values are defined:

TCP Serial Server

The device will listen for an incoming TCP connection from a remote

client. The port number of the listening connection is specified in the

“RS-232 Service Port Number” setting. Data received on the TCP

connection will be forwarded to the RS-232 port, and data received on the

RS-232 port will be forwarded to this TCP connection.

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

up 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 Number” 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.

NOTE

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