LRS-455-EU Data Transceiver Users Manual
LUM0032AA Rev A
Version 1.0
9
Baud Rate
Description
pressing/toggling the Set-up button/switch, if available. OEM boards may also
enter Setup when Pin 2 is grounded.
The Main Data Port is the RS232 port. The OEM modules use a 2-row, 2 mm
female connector. The diagnostic cable for this port (ASC2009DC) is available from
FreeWave.
TurnOn/OffDelay
TurnOnDelay
- Sets the delay between when the line drivers are turned on and
when the data leaves the data port. This setting can be adjusted for a 1-9 mS
delay.
TurnOffDelay-
This setting specifies the time after the end of transmission of a
character to the RS485 bus that the transceiver stops driving the bus and releases
the bus to other devices. The units are ¼ of a character with a range of 0-9. An
entry of 4 means a delay equivalent to the duration of a full character. Default is
zero delay.
For data rates of 1200 bits/S or slower, avoid setting the TurnoffDelay parameter
higher than 4. At those rates the functionality of the microprocessor changes so
that a TurnoffDelay of 5 will have the same effect as if set to 1, and a setting of 6
will have the same effect as 2, and so on.
Note:
TurnOffDelay must be set to a value of at least 4 for RS4xx operation.
FlowControl
This menu specifies the hardware flow control for the Data port. The options for 0-3
are described below.
Port Additional Information
None Default - Uses software control (XON XOFF)
RTS
DTR
DOT
Modbus RTU Timing
The Modbus RTU setting causes the radio to wait for an amount of time, “gathering” data before sending
out the radio link.
With a setting of
0
(Disabled), the radio will send data out its radio link as soon as the data is received
into the serial port.
With a setting of
1
, the radio will wait for a number of slots equal to 2 times the Master Packet Repeat
setting before sending the received data out the radio link. For example, if
Master Packet Repeat = 3
,
