User's Manual

14
3.2. Serial Ports
The applicable settings for serial ports are as follows.
Table 3-2 The IW05 Serial Port Settings
Serial Port Settings
Values
Baud rate
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200, 230400, 460800,
921600
Data bite
8
Parity
No parity, Even parity, Odd parity
Stop bit
1, 2
Hardware Flow Control
Use, No Use
The values in box are the factory default settings.
3.3. Data Bit
IW05 supports only 8 data bit. But if both master device and slave device are one of Parani-SD,
Parani-ESD or IW05 or Parani-MSP1000 series, Parani series devices can support 7 data bit and
even/odd parity by setting both Parani series devices to 8 data bit and none parity. But 7 data bit and
none parity cannot be supported even if both master device and slave device are Parani series
devices.
3.4. Hardware Flow Control
IW05 plugged into its host system transmits data from host to the other side Bluetooth device. This
data is saved temporarily in the internal buffer of IW05 and sent repeatedly until the transmission is
completed packet by packet. When the radio transmission condition is not good enough to send data
promptly, it can cause a transmission delay. If the host sends more data when the buffer is full, buffer
overflow will make IW05 malfunction consequently. In order to prevent this buffer overflow, IW05 works
as follows.
When using hardware flow control, IW05 disables RTS so that it stops receiving any further data from
the host when the buffer becomes full. RTS will be re-enabled again to begin receiving data from the
host when the buffer has created more room for more data.
When hardware flow control is not being used, the IW05 clears the buffer to secure room for the next
data when the buffer becomes full. This can mean a loss of data may occur. As the transmission data
becomes large, the possibility of data loss becomes greater.
For large data transmissions, the use of hardware flow control is highly recommended. (Not support
flow control in Multi-Drop Mode.)
3.5. Remote Configuration
IW05 supports remote configuration. After connecting to the IW05 through Bluetooth, before sending
any other character, send three escape character (default :+). Then, the IW05 will enter remote
configuration mode and print “Please Enter Password”. You have to enter the password with
“AT+PASS” command within 2 minutes. After the password authentication, you are able to enter any at
command except “ATH”, “ATO”, “ATD”, “AT+BTSCAN”, “AT+BTINQ?” and “AT+BTCANCEL”. The
default password is “0000” and it is configurable with “AT+CHPASS” command.