ABB Advant AC500 Manual page 47

Diagnosis
The diagnosis telegram provides detailed information if there is any problem, particularly in the process.
A trip caused by overload of a motor is an example. Diagnosis data are automatically read by the
PROFIBUS DP master if it gets a general fault info within a monitoring telegram.
Complete diagnosis telegram:
PROFIBUS DP
6 bytes Standard diagnosis data
x bytes User-specific diagnosis
data
Remark: Diagnosis function blocks provide additional 3 bytes diagnosis data that are created by the bus
master.
Configuration, Identification and other data
Configuration, identification and other data are necessary to start the operation and communication with
the PROFIBUS DP slave. These data is created during configuring/selecting the bus line including the
slaves/devices and is sent to the FieldBusPlugs directly after power-up.
All slaves compare the expected configuration with their real configuration and confirm if they agree as a
supposition to start the data exchange.
Additionally some general data such as baud rate and time-out are transferred.
Parameters
Parameters are necessary to adapt the device to the process.
E.g., for the device UMC22 the parameter "Set current" that has to be set correctly to enable the UMC22
to protect the connected motor perfectly against overload.
Parameters can also include service-oriented data such as "Operation hours".
The main difference between the PROFIBUS DP versions DP-V0 and DP-V1 is:
DP/V0 Parameters
Master only as block
Commands
Monitorings
Configuration
Diagnosis
Figure: Parameters DP-V0 and DP-V1
DP-V0 only allows to write the complete parameter set in one block.
The bus master sends the parameter block to the slave during power-up of the slave/device. Some
control systems also allow to send the parameter block during normal operation.
____________________________________________________________________________________________________________
V2
AC500 Hardware
PROFIBUS DP with PDP21, PDP22
6 bytes Standard diagnosis data
1 byte + PDP21, PDP22 itself + length of slave
1 byte diagnosis
n bytes Device-specific
DP/V0 DP/V1
Slave Master
1-47
Parameters
as single
or as block
Commands
Monitorings
Configuration
Diagnosis
System data
AC500 / Issued: 05.2007
DP/V1
Slave