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PFA, BGT · Edition 03.11l
9
Function
3 .2 Air valve
The air valves used to purge the furnace or kiln can ei-
ther be activated via the PROFIBUS or via a separate
cable (to terminal strip X10 of the BGT – at 24 V DC to
terminal 12 or 13, or at mains voltage to terminal 18).
It is possible to use the PROFIBUS to communicate that
purging is being carried out (by connecting mains volt-
age to terminal 17 of terminal strip X10 of the BGT).
3 .3 BCSoft
The Windows software BCSoft allows extended access
to individual statistics, visualization of the process val-
ues and the parameterization of the field bus interface
via an optical interface. Unit parameters can be adjust-
ed to the specific application.
3 .4 Configuration, Master-Slave procedure
PROFIBUS DP is structured as a Master-Slave system.
This allows mono-master or multi-master systems to be
implemented.
A distinction is made between three device types:
– DP Masters Class 1 (DPM1)
DPM1 devices are central controllers which exchange
data with the distributed stations (slaves) on the ba-
sis of a defined cycle. This includes, for instance, the
PLC, PC, CNC or VME systems with which the PROFI-
BUS DP is operated.
– DP Masters Class 2 (DPM2)
DPM2 devices are programming, project planning or
operator-control devices. They are used for configu-
ration and commissioning of the system or for system
operation and visualization in ongoing operation.
– DP slaves
The devices which transmit input information from
the periphery to the master and which issue output
information from the master to the periphery are re-
ferred to as “slaves”.
This also includes the PFA.