Modifying The I 2 C-Bus Address; Changing The Auto-Update Period - GE DPS 5000 Series User Manual

ii. Check the configuration data write access status (optional).
Read STATUS: WENB <0 [3]>
The configuration registers may then be modified by writing the new user values to
the appropriate registers. If the new user values are to be permanent, the following
step must be performed:
iii. Save the register data to non-volatile memory.
Write 0b1 to STATUS: WRITE <0 [5]>
Finally, the configuration data registers should be re-locked to prevent further
changes from being made:
iv. Disable changes to the configuration data registers.
Write 0 to ACCESS: ACCESS <5 [31..0]>
4.4.2 Modifying the I 2 C-bus address
All DPS 5000 sensors are supplied with the I
of 2. The I C-bus address may be changed by the user by writing the desired new
2
address to the I2C_ADDR register
For example, to change the I
i. Unlock the configuration data registers as described in section 4.4.1.
ii. Update the I
Write 64 to I2C_ADDR: ADDR [7..0] <66 [7..0]>
iii. Save the new I
configuration data registers as described in section 4.4.1.
iv. Reset the sensor. Either power cycle the sensor or:
Write 0b10 to STATUS: RESET [1..0] <0 [15..14]>
The sensor will now respond to the new I
4.4.3

Changing the auto-update period

All DPS 5000 sensors are supplied with the auto-update period set to the default
value of 100 ms. The auto-update period may be changed by the user by writing
the desired new period to the DELAY register
and 1999 ms in 1 ms increments.
For example, to change the auto-update period to 1.512 s:
i. Exit the automatic update mode (if applicable).
Write 0b0 to STATUS: AUTO <0 [8]>
ii. Unlock the configuration data registers as described in section 4.4.1.
iii. Update the auto-update period.
Write 1512 to DELAY: DELAY [15..0] <85 [15..0]>
iv. Save the new auto-update period to non-volatile memory if required and re-
lock the configuration data registers as described in section 4.4.1.
9
A change of the sensor I C bus address will not come into effect until the I2C_ADDR register has been
2
modified, copied to non-volatile memory and the sensor is reset via the status register or by cycling the
sensor power.
10
A change to the DELAY register will not come into effect whilst the sensor is in the auto-update
mode. Exit then re-enter the auto-update mode for the change to be applied.
K0582 Revision B
9 . Allowable address values are 1 to 127.
2 C-bus address to 64:
2 C-bus address.
2 C-bus address to non-volatile memory and re-lock the
C-bus address.
2
May 2015
0b1 = configuration data write enabled
2 C-bus address set to the default value
. The allowable period is between 1
10
23