KROHNE MFC 300 Profibus - Manual (Page 23)

PROFIBUS PA
3
23
MFC 300
www.krohne.com 07/2014 - 4001086802 - AD MFC 300 PROFIBUS R02 en
If the GSDs of the "MFC050/051PA" ("KROHE801.GSD" or "YP01E801.GSD") are used…
• The MFC050/051PA parameter set for the PLC control software will be maintained, i.e. there
is no adaptation needed with reference to the replaced interface of the MFC300 with
PROFIBUS MBP interface.
• In this usage of the GSD the PA Profile 3.0 PA Profile 3.0 PA Profile 3.0 PA Profile 3.0 functionality is provided in the PLC for both
replacements.
• Compatibility is restricted to the PROFIBUS MS0 services. In addition the "MFC050/051
status" is provided for AI Block and Totalizer outputs if the related parameters are accessed
via acyclic MS2 services and "MFC050/051 compatibility mode" is enabled. This is to get a
unique value independent from the access mechanism.
• There is no further compatibility mode regarding the acyclic parameter access, i.e. MFC300
Device Description or DTM has to be used even if "MFC050/051 compatibility mode" is
enabled. This mode does not provide mechanical or electrical compatibility (i.e. housing size
and connector positions, measuring sensor, power consumption, etc.).
• If an MFC300 signal converter is operating in "MFC050/051 compatibility mode" its
functionality is restricted to the MFC050/051 features, e.g. there will be no possibility to
transfer more than two Totalizer Function Block outputs. MS1 services, i.e. acyclic parameter
accesses by a master class 1, are not supported in "MFC050/051 compatibility mode".
If the GSD of "MFC300 with PROFIBUS MBP interface” (KR014511.GSD or
YP014511.GSD) is used…
• The MFC050/051PA parameter set for the PLC control software has to be adapted with
reference to the MFC300 PROFIBUS MPB interface.
• In this usage of the GSD the PA Profile 3.0 PA Profile 3.0 PA Profile 3.0 PA Profile 3.0 functionality is provided and all diagnostic features
of the "MFC300 with PROFIBUS MBP interface" are being made available.
INFORMATION!
The "MFC050/051 compatibility mode" is not recommended for MFC300 PROFIBUS module with
RS485 interface. The GSD file has to be exchanged because of its different timings and supported
baud rates. Nevertheless the feature is not blocked in this case because RS485 interface will
operate under the MFC050/051 conditions, too. The user has to take care about the different bus
connections.
INFORMATION!
Even if the PROFIBUS module is operating in "MFC050/051 compatibility mode" the behaviour
might be different from MFC050/051 devices. Because of additional self-tests warnings or
failure messages may occur under conditions when MFC050/051 will not report any problem.
Unexpected status messages may occur.
There is no warranty that MFC300 PROFIBUS PA devices can replace the MFC050/051 PA device
in any case without modifications of the PLC/PCS software.