B.2 parameterisation via fpc, Parameterisation via fpc, B−15 – Festo Контроллеры двигателя SFC-LAC User Manual
Page 235: B.2.1, Structure of the festo parameter channel (fpc), Ns b.2.1
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B. Parametrizing via field bus
B−15
Festo GDCP−SFC−LACI−DN−EN en 0812NH
B.2
Parameterisation via FPC
B.2.1
Structure of the Festo Parameter Channel (FPC)
The Festo Parameter Channel" is used for transmitting
parameters. It consists of 8 octets:
FPC
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
O data
0
IND
PKE (ParID)
PWE (ParVal)
I data
0
IND
PKE (ParID)
PWE (ParVal)
IND
Subindex
PKE
Parameter identifier: PNU and AK
PWE
Parameter value:
ć for double word: bytes 5 ... 8
ć for word:
bytes 7, 8
ć for byte:
byte 8
Tab. B/2:
Structure of the Festo parameter channel (FPC)
Element
Description
Parameter identifier ParID
Contains:
Ĉ Parameter number PNU: Identifies a parameter
Ĉ Task or reply identifier (AK): describes the type of task/reply
Subindex (IND)
Addresses an element of an array parameter
Parameter value ParVal
Value of the parameter
If a task cannot be carried out, an error number will be transmitted in
the reply (see section B.2.2)
Tab. B/3:
Parameter channel elements