LRS400S Data Transceiver Users Manual
LUM0025AA Rev A
Version 1.0
13
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
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. Select the appropriate option to
communicate with the end device.
Data Bits Parity
Stop Bits
8
None
1
7
Even
1
7
Odd
1
8
None
2
8
Even
1
8
Odd
1
Modbus RTU
Support for
Modbus RTU
protocol is available. The default setting for
Modbus
RTU
is
0
(Not Enabled).
To enable Modbus capability, set
Modbus RTU
to 1.
Note:
When using the transceiver in
Modbus RTU
mode, the Master Packet
Repeat must be set the same in all radios whether the network is in Point-to-Point or
MultiPoint mode. The
Modbus RTU
mode must be selected when transceivers are
configured in RS485 or RS422 mode.
Serial Interface
In products for which the protocol of the data port is software selectable, use this
menu to set the protocol of the data port. In the TTL RF board product this setting
must be "0".
Protocol Additional
Information
RS232 Also used for TTL transceivers.
RS422 Modbus RTU mode must be enabled. See above.
RS485 Modbus RTU mode must be enabled. See above.
DOT Special for the Department of Transportation.
Note:
When DOT mode is enabled, the TimeDelay settings operate the same as
in the RS485/422 mode.
Note:
RS4xx mode must have Modbus RTU enabled, and TurnoffDelay set to at
least 4.
Setup Port
Note: DO NOT change this setting unless the correct programming cable is
available for the new setting.
This setting determines which port, Main or Diagnostics, is used to enter the Setup
Main Menu.
Port Additional Information
Main Only The terminal is connected to the Main Data Port.
Diagnostics Only The terminal is connected to the Diagnostic Port.
