User`s manual

GFK-2334A Chapter 5 PROFIBUS Master Status and Diagnostics 5-3
5
Slave Status Bit Array
The Slave Status bit array contains a bit for each slave. If communication with a slave has
no errors, the bit corresponding to the slave (determined by its network address) is set. If
the communication has errors or is not occurring for any reason, the bit is cleared. The
Master also maintains its own status in the bit corresponding to its network address. The
starting reference address for the Slave Status bit array is set in the PROFIBUS Master
software configuration. For details, see “PROFIBUS Parameters” in chapter 3.
Slave Diagnostics/Firmware ID Array
The starting reference address for this array is set in the PROFIBUS Master software
configuration. For details, see “PROFIBUS Parameters” in chapter 3.
Slave Diagnostics/Firmware ID
Word Name Description
1 Station
Address
If diagnostics are pending, this word contains the station address of the
first slave that has diagnostics. The diagnostics can be read using the Get
Device Diagnostics COMMREQ (task 4), described on page 5-12. This
clears the word and the master then places the next pending diagnostic
address into the Slave Diagnostics word.
If this word is zero there are no pending diagnostics.
2 Firmware ID Current firmware version running on the Master module. The Major
Revision number resides in the upper byte and the Minor Revision number
resides in the lower byte of this word.