Spread Spectrum Wireless Data Transceiver User Manual
Baud Rate
Description
Actual Baud Rate
(selections 0-9)
The actual baud rate for the transceiver’s data port.
It is desirable to set the baud rate to the highest level supported by the device to
which it is connected. In certain circumstances, however, this may actually result
in slower data communications.
Data, Parity (A)
There are six data word length and parity configurations available to be used with
FreeWave transceivers. The default setting is
0
(8,N,1) and is the most commonly
used serial communications protocol. When Data, Parity are selected from the
Baud Rate menu, a prompt to enter a value for Data, Parity. The following
describes each option.
Menu
Setting
Data Bits Parity
Stop Bits
0
8
None
1
1
7
Even
1
2
7
Odd
1
3
8
None
2
4
8
Even
1
5
8
Odd
1
Modbus RTU (B)
Support for Modbus RTU protocol is available. The default setting for Modbus RTU
is
0
(Not Enabled).
To enable the Modbus RTU mode:
1.
In the
Set Baud Rate
menu enter
(B)
and then select
1
2.
In the
Set MultiPoint Parameters
menu, set
Master Packet Repeat
to 3.
Note:
When using the transceiver in Modbus RTU mode the Master Packet
Repeat must be set to 3 regardless of whether the network is in Point-to-
Point or MultiPoint mode. The Modbus RTU mode must be selected in
RS485 transceiver.
RS232/485 (C)
In products for which the protocol of the Data port is software selectable (such as
FGR09xx, FGR-115RC, FGR115W), use this menu to set the protocol of its data
port. In TTL RF board products (FGR09Tx) and Ethernet products (FRG-115RE),
this setting must be "0".
Menu Protocol
Additional
Information
0
RS232
Use this for TTL RF boards and Ethernet transceiver.
1
RS422
2
RS485
Modbus RTU mode must be enabled.
3
DOT
Special for the Department of Transportation.
Note:
TimeDelay settings are important for the DOT mode. When the DOT mode
is enabled the TimeDelay feature operates as in the RS485 mode.
LUM0002AD Version
6.1
25
