User's Manual
FreeWave Technologies Spread Spectrum Transceiver User Manual
900 MHz and 2.4 GHz
V5.0S
23
port. In TTL RF board products (FGR09Tx) and Ethernet products (FRG-115RE),
this setting must be "0".
Default is 0 (RS232 or TTL).
Setup Port
The modem may be set-up using a terminal connected to the Main data port, or to
the Diagnostic port. Use this menu to specify which port may be used for that
purpose.
The Main Data Port is the RS232 port (which is not available in Ethernet modems).
The Diagnostics port is a 3-pin connector. In the FGR-115RC and the FGR-115RE
(Ethernet modem) this is a small 3-pin connector on the rear panel. An adapter
cable for this port ((ASC0409DC) is available from FreeWave.
In the FGR09xx (board level modem), this is part of a 2-row, 2 mm PCB female
strip connector. An adapter cable for this port ((ASC2009DC) is available from
FreeWave.
This port is not available in the waterproof model (FGR-115WC).
This is set at the factory for the type of modem ('2' for Ethernet products, and for
DOT and TTL options; '3' otherwise). Do not change it.
The Set-up Mode is invoked by sending a "U" (capital) to the Diagnostics port or by
pressing the Set-up button, if available (this is NOT the Ethernet reset button), or
by grounding the Set-up pin (in waterproof enclosures).
Turnoff Delay
Use this menu to specify the time after the end of transmission of a character to
the RS485 bus, when the modem stops driving the bus and releases the bus to
other devices on it. The units are ΒΌ of a character (so, an entry of 4 means a delay
equivalent to the duration of a full character).
Default is zero delay.
Table 5: Data port protocol
Selections
Menu Setting Protocol Notes
0 RS232 Use this for TTL RF boards and Ethernet modems
1 RS422
2 RS485 You must turn on ModBUS RTU mode.
3 DOT Special for the Department Of Transportation
Table 6: Set-up port
Selections
Menu Setting Port Notes
1 Main The terminal is connected to the Main Data Port, in
place of the device normally connected to it.
2 Diagnostics The terminal is connected to the Diagnostic port.
3 Either one The terminal may be connected to either port