6. How to Access the FC 300 Parameters
6.1. PCP Communication
For read and write of FC 300 parameters, the Interbus Peripherals Communication Protocol (PCP) channel has to be used.
The Danfoss FC 300 Interbus option supports the following services:
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Initiate: Establish connection between master and the FC 300.
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Abort: Cancel connection between master and FC 300.
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Read: Read FC 300 Parameters.
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Write: Write FC 300 Parameters.
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Get Object description: Both short and long are supported.
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Identify: Identification of the FC 300 to the Master.
The following entries must be made in the Master for PCP communication:
Communication reference
2
Transmit buffer length
246
Receive buffer length
246
Supported service request
80 30 00 hex
Supported service response
00 00 00 hex
All parameters in the FC 300 are mapped to the Danfoss specific objects, starting from object 22000 = 55F0hex.
The first object is 22001 (55F1hex), which corresponds to par. 0-01.
22002 corresponds to par. 0-02 and so on.
This means that all parameters can be accessed by using PCP communication, just by adding 22000D to the FC 300 parameter.
To access FC 300 objects for reading and writing, it is necessary to set up the correct data size and index for the particular parameter.
The option board can provide the complete list of objects to the user by using the GET OD command.
Alternatively the user can set up the command for the object manually.
FC 300 Interbus Operating Instructions
6. How to Access the FC 300 Parameters
MG.33.H3.02 - VLT is a registered Danfoss trademark
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