Microhard Systems BulletPlus Operating Manual page 113

4.0 Configuration
This setting defines the serial output data framing. In Transparent
mode (default), the received data will be output promptly from the
BulletPlus.
When set to Seamless, the serial port server will add a gap between data frames to comply with the
MODBUS protocol for example. See 'Character Timeout' below for related information.
In Seamless mode (see Data Mode described on the preceding page),
this setting determines when the serial server will consider the recently
-received incoming data as being ready to transmit.
MODBUS standard, frames will be marked as 'bad' if the time gap
between frames is greater than 1.5 characters, but less than the
Character Timeout value.
The serial server also uses this parameter to determine the time gap inserted between frames. It is
measured in 'characters' and related to baud rate.
Example: If the baud rate is 9600bps, it takes approximately 1ms to move one character. With the
Character Timeout set to 4, the timeout period is 4ms. When the calculated time is less than 3.5ms, the
serial server will set the character timeout to a minimum value of 3.5ms.
If the baud rate is greater than 19200bps, the minimum character timeout is internally set to 750us
(microseconds).
Defines the buffer size that the serial server will use to receive data
from the serial port.
Timeout criteria has been met, or the buffer is full, it packetizes the
received frame and transmits it.
When enabled the data will continue to buffer received on the serial
data port when the radio loses synchronization. When disabled the
BulletPlus will disregard any data received on the serial data port when
radio synchronization is lost.
This option will enable or disable the MODBUS decoding and
encoding features.
MODBUS encryption key used for the MODBUS TCP Protection
Status feature.
© Microhard Systems Inc.
When the server detects that the Character
Values (selection)
Seamless / Transparent
Character Timeout
Values (characters)
As per the
24
Maximum Packet Size
Values (bytes)
1024
No-Connection Data
Values (selection)
Disable / Enable
MODBUS TCP Status
Values (selection)
Disable / Enable
MODBUS TCP Protection Key
Values (string)
1234
Data Mode
113