How To Access Fc 300 Parameters; Parameter Access In General - Danfoss FC 300 Profibus Manual

FC 300 Profibus

How to Access FC 300 Parameters

Parameter Access in General

In an automated system, frequency converter parameters can be accessed either from the process controller
(i.e. PLC), or from various kinds of HMI equipment. For parameter access from controllers and HMI, please
observe the following:
FC 300 parameters are located in four separate set-ups. Parameter access in the drive is performed via
several separated parameter channels, which can be used individually to access a certain parameter set-up.
Select the desired set-up in par. 0-11 Edit set-up or 9-70 Parameter set-up selection.
Using this mechanism it is possible to Read or Write to and from parameters in a certain set-up from a
master class 1, e.g. a PLC, and simultaneously access parameters in a different set-up from a master class
2, e.g. a PC tool, without interfering with the set-up selection for the programming sources.
Parameters can be accessed via the following sites:
LCP on FC300
FC Protocol on RS485 or USB
Cyclical data access on DP V0 (PCV Channel)
PROFIBUS Master Class 1
PROFIBUS Master Class 2 (3 connections possible)
Please note that although these parameter channels are separated, data conflict can occur if write
to parameters is made from a HMI unit into a set-up which is actively in use by the frequency
converter or the process controller (e.g. a PLC).
Data Store
Parameter write via the PCV channel (DP V0) will be stored in RAM only. If data has to be stored in Non
Volatile Memory, the par. 9-71 PROFIBUS save data values can be used for storing one or more set-ups.
Using DP V1 access, parameters can be stored either in RAM or Non-Volatile Memory by choice of a specific
Write Request command. Non-stored data can at any time be stored in non-volatile memory by activating
par. 9-71 PROFIBUS save data values.
MG.33.C2.02 - VLT is a registered Danfoss trademark
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