Campbell Scientific NL240 Wireless Network Link Interface - Manual (Page 15)

NL240 Wireless Network Link Interface
4. Overview
The NL240 Wireless Network Link Interface is designed for communication
with Campbell Scientific dataloggers and peripherals over a Wi-Fi network.
The Wi-Fi network can be an infrastructure network or an ad hoc (point-to-
point) network. See Section 6, Wi-Fi, for more information.
The NL240 includes a CS I/O port and an RS-232 port for communication. A
USB device port is used for configuring the NL240 device.
FIGURE 4-1. NL240
Bridge Mode Enabled
The NL240 can be configured to bridge WLAN and CS I/O communications
(see FIGURE 4-2). This mode is used for providing access to the internal IP
functionality of the CR800/850, CR1000, and CR3000 (e.g., web page access,
email, FTP, etc.). Bridge mode does not use PPP. Instead, raw IP packets are
transferred between the WLAN and CS I/O connections.
FIGURE 4-2. Bridge Mode enabled
Bridge Mode Disabled
With Bridge Mode disabled (see FIGURE 4-3), the NL240 can provide
multiple services simultaneously including TCP Serial Server, TCP Serial
Client, Modbus TCP/IP Gateway, and PakBus® router. The NL240 can act as
a serial server and PakBus router simultaneously. However, each physical port
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