.. _us-parameters:

Parameter Set
=============

The USBoard-USS4 uses a parameter set which allows a custom configuration.
The graphical parameter editor can be used to easily manipulate the board's settings,
store them on the host computer's hard drive, write them to the EEPROM on the USBoard-USS4
or read the current values from the board.

The parameter set consists of 54 bytes. Their meaning is described in the following.

Byte 1
   CAN baud rate

   ==  =====================
   0   1000 kBaud (default)
   1   500 kBaud
   2   250 kBaud
   3   125 kBaud
   4   100 kBaud
   5   50 kBaud
   ==  =====================

Bytes 2-5
   CAN base address (default ``0x400``), calculated as follows::

      (byte_5 << 24) | (byte_4 << 16) | (byte_3 << 8) | byte_2

Byte 6
   ``1`` if the CAN extended ID is used, ``0`` if not (default)

Byte 7
   Transmission mode for measurement data

   == ====================================
   0  Send on request (default)
   1  Send continously via CAN
   2  Send continously via RS-232
   3  Send continously via CAN and RS-232
   == ====================================

Byte 8
   Transmission interval for continous sending

   == ======
   0  0.5 s
   1  1.0 s
   2  2.0 s
   3  0.2 s
   == ======

Bytes 9-10
   Indicates active sensors (one bit per sensor, 1 = active, 0 = inactive), by default all sensors are active

Bytes 11-26
   Warning distance of sensors 1-16 in cm, default is 100 cm

Bytes 27-42
   Alarm distance of sensors 1-16 in cm, default is 30 cm

Bytes 43-51
   Any value, obsolete

Bytes 52-54
   Serial number, read only