C Festo Parameter Channel (FPC)
154 Festo – GDCP-CMMO-ST-LK-C-HP-EN – 2017-05b – English
C.4 Parameter file transmission
C.4.1 Structure of EFPC in parameter file transmission
The EFPC extended parameter channel permits automated transmission of all configurable parameters
of a motor controller in the form of a parameter file.
As a result, the function of a parameter server can be implemented.
The procedure is in principle applicable for all controllers that support management of such files.
Modules with which transmission can be easily implemented are available for some selec
ted controllers at è www.festo.com/sp.
The structure of the EFPC in parameter file transmission is shown in è Tab. C.8.
Data Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8
O-data FPCC Package ID User data package
3 control
ler bits
5 bit sequence
number
I-data FPCS Package ID User data package
3 status
bits
5 bit sequence
number
Tab. C.8 Structure of EFPC for parameter file transmission
C.4.2 Package ID
The package ID is divided into 2 areas. The first 3 bits include controller and status information. The
then following 5 bits include the sequence number of the data packets è section C.4.5.
Control/status bits Function Content of user data
000xxxxx Data transmission active No data / user data package
001xxxxx Start data transmission No data / size of the parameter file in bytes
010xxxxx Stop data transmission No data
011xxxxx Error No data / error code
Tab. C.9 Package ID – 3 control or status bits