Specifications

Network Configuration
10
ICSLan Device Control Boxes
Telnet IP Configuration Commands
The SET IP (page 58) and GET IP (page 56) Telnet commands listed in the following table can be sent
directly to the device via a Telnet terminal session. These commands can be used for initial network
configuration of the EXB Modules.
The default Telnet port is 23. A value of 0 disables the telnet server.
Telnet is enabled by default.
See the Terminal (Telnet) Commands section on page 53 for details.
Master Connection Modes
The mode of communication used for connection to the Master is specified via the SET CONNECTION Telnet
command (see page 57).
The options are “AUTO”, “URLTCP”, “URLUDP” or “NDP”, as described below.
Note that default connection mode setting is NDP.
AUTO - This mode utilizes TCP communication; it looks for a matching System Number and
attempts to come online with the first master it sees with that System Number.
URLTCP - TCP; the Master is specified via URL.
URLUDP - UDP; the Master is specified via URL.
NDP - UDP; this mode utilizes the NDP binding process to assign the EXB Module (the physical
device) to a Master via NetLinx Studio. Once bound, communications are conducted via UDP.
TCP vs. UDP
TCP - Protocol has built-in retry mechanism.
UDP - Protocol does not have a built-in retry mechanism, but consumes fewer resources on the
Master. AMX’s UDP implementation of NetLinx employs a retry mechanism to provide the
reliability of TCP, with the resource efficiency of UDP.
URL vs. NDP vs. Auto
Determining which connection method to use for Master Connection Mode is essentially a matter of deciding
what information the device should use to identify the correct target Master for connection.
The default mode is NDP; the mode can be changed via the SET CONNECTION Telnet command (see
page 57).
URL - The device connects to the Master with the specified URL. The device must be configured
with the URL of a specific Master via the SET CONNECTION Telnet command (see page 57).
NDP - The device connects to the Master it's been bound to based on the Masters MAC address.
The binding is configured via NetLinx Studio. Once bound, the device must be unbound using
either NetLinx Studio or the Telnet NDP UNBIND command before being re-bound to a different
Master.
Alternatively, NDP devices can be bound/unbound via options on the Master’s Web Configuration
pages (System > Manage NetLinx). Refer to the NetLinx Integrated Controllers- WebConsole &
Programming Guide (System - Manage NetLinx section) for details.
Auto - The device connects to the first Master it finds with the specified System Number. The
device must be configured with the desired system number via the SET CONNECTION Telnet
command (see page 57).
Use of this method requires that only one Master has any particular system number, and is visible to
the subnet. If this is the case, then Auto is the most simple choice. However, with Auto, you are not
hard-bound to a particular Master. Therefore, if at some point in the future, another Master is
configured with the same system number, the result is that the EXB Module could show up on that
other Master.
In URL modes, the Master can use either an IP address or a DNS name.