05-3946A01, Rev. C
TransNET OEM Integration Guide
45
DTYPE [NODE/ROOT]
Network Diagnostics Mode
The
DTYPE
command specifies the radio’s operational characteristics for
network-wide diagnostics. The transceiver uses the following types:
•
NODE
—The most common setting, and the default. This is the basic
system radio device-type. Typically, the radio network is comprised of
nodes and one root. Intrusive diagnostics can originate from any node.
However, non-intrusive diagnostics can only be conducted from the
root node.
•
ROOT
—Always one, and only one, per network (including units
associated through Extension units.) The root is the focal point of
network-wide diagnostics information. Intrusive diagnostics can
originate from any radio, including the root. However, the root is the
only
radio through which non-intrusive diagnostics can be conducted.
FEC [ON, OFF]
Forward Error Correction
This command is used to view the FEC setting, or turn it on or off. The default
setting is
FEC ON
. (It needs to be turned off when throughputs exceed
57,600 bps.) FEC is set at the Master and is automatically passed on to all
Remotes in a network.
Setting FEC to
ON
improves sensitivity at the cost of reduced throughput.
Typical SCADA/telemetry applications use low data rates and, as such, the
FEC setting is normally transparent to them.
HOPTIME [7, 28]
Radio Transmitter Hop Timing
The
HOPTIME
command is used to set or display the hop-time setting. The
command is a digit corresponding to the hop-time setting in milliseconds. The
default
HOPTIME
setting is
7
. A setting of
28
must be used when throughputs
exceed 57,600 bps and is recommended when data transmission sizes exceed
256 bytes.
Changes to the
HOPTIME
setting may only be made at the Master radio. (This
is because the Master radio establishes the hop-time setting for the entire
network.) At Remote radios, the hop-time setting may be read when the radio
is in synchronization with the Master, but it cannot be changed.
INIT
Initialize; Restore to Factory Defaults
The
INIT
command is used to reset the radio’s operating parameters to the
factory defaults listed in
. This may be helpful when
trying to resolve configuration problems that resulted from the entry of one
or more improper command settings. If you are unsure of which command
setting caused the problem, this command allows you to get back to a known
working state.
