Secutech Radio modules ST002010 Ficha De Dados
Códigos do produto
ST002010
Security & Electronic Technologies GmbH
Page 3
Principle of Operation
General
SECU-DATA 1232 is used for wireless data transmission of RS232 signals
(point-to-point connections). The data format to both host devices can be
set individually. A hardware handshake is implemented for data flow control.
The incoming data are prepared for the RF-transmission, a CRC-16 check-
sum value is added and then the data are sent to the remote device. In
case of distortions the message is repeated automatically until it is received
correctly by the partner instrument. Here the data are available in the preset
format for the connected host equipment.
The data transfer is bidirectional, the effective transfer rate is 2.400 Baud.
(point-to-point connections). The data format to both host devices can be
set individually. A hardware handshake is implemented for data flow control.
The incoming data are prepared for the RF-transmission, a CRC-16 check-
sum value is added and then the data are sent to the remote device. In
case of distortions the message is repeated automatically until it is received
correctly by the partner instrument. Here the data are available in the preset
format for the connected host equipment.
The data transfer is bidirectional, the effective transfer rate is 2.400 Baud.
RxD
TxD
CTS
RTS
GND
TxD
CTS
RTS
GND
TxD
RxD
RTS
CTS
CTS
GND
RxD
TxD
CTS
RTS
RTS
GND
TxD
RxD
RTS
CTS
GND
RxD
RTS
CTS
GND
Host device A
Host device B
SECU-DATA 1232
SECU-DATA 1232
Functionality in Detail
SECU-DATA 1232 provides a receiver and a transmitter buffer with 64
bytes. RS 232 data coming in from the host device A are put into the buffer.
If the buffer is full or if the preset time-out is reached (see section chapter
“configuration”) line RTS blocks the data transfer and the data are sent via
RF to the partner device which will acknowledge the reception via RF. Then
the input buffer is cleared and RTS enables further data transfer.
The remote SECU-DATA 1232 provides the data on the RS 232 output for
the connected host device B.