KROHNE OPTIWAVE 6300C PROFIBUS PA - Manual (Page 9)

OPERATION
4
9
OPTIWAVE 6300 C
www.krohne.com 02/2010 - 4000621201 - AD PROFIBUS PA OPTIWAVE 6300
Read the first 2 "Quality" bits in the status byte to get the quality status. A description is given in
the table that follows:
4.2 PROFIBUS PA address
4.2.1 Default address
The default slave address is 126. It is not possible to change this value in the local device menu.
4.2.2 How to change the address
Use a master device (a PLC or operating program) and the PROFIBUS service
"SET_SLAVE_ADD" to change the slave address. It is not possible to change this value in the
local device menu.
If the PROFIBUS service "SET_SLAVE_ADD" is not available:
1 Use acyclic services "FACTORY_RESET" to reset the slave address
2 Use the PROFIBUS service "SET_SLAVE_ADD" to change the slave address to the new value.
4.3 Error handling
If the device finds an error, more data will be sent to the Master Communication Module. The
description of this supplementary data is given in the GSD file. Refer to UNIT_DIAG_BIT(i).
Quality status Description
Good (non Cascade) The measurement value is correct.
Uncertain The measurement value is can be used but it is possibly not accurate 1
Bad Do not use this measurement value
1 if it is possble that the value is not accurate (for example, the spectrum quality is not sufficient to get a good signal),
this status is shown
INFORMATION!
If you use the PROFIBUS service "SET_SLAVE_ADD" to change the slave address and the
"NO_ADD_CHG" flag has the value "true", the PROFIBUS service "SET_SLAVE_ADD" will not be
available for subsequent changes.