Festo EMCA-EC-67 CO Series, Description

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A Festo Parameter Channel (FPC)
224 Festo – EMCA-EC-C-HP-EN – 2017-11e – English
A Festo Parameter Channel (FPC)
A.1 Festo Parameter Channel (FPC) for cyclic data (I/O data)
A.1.1 Function
The Festo Parameter Channel (FPC) is an expansion of the FHPP standard data and is used for cyclical
transmission of parameters (PNU) or parameter files. Depending on the control interface, the FHPP
message for the Festo Parameter Channel (FPC) has an additional 8 bytes of “Control and status data”
permanently assigned or additionally configurable.
Structure of the FHPP message
In the FHPP message, the second 8 bytes are used for the FPC parameter channel.
FHPP message with parameter channel (FPC) (byte 1 ... 32)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
FHPP standard data
(8 bytes)
FPC parameter channel
(8 bytes)
FHPP+ data
(Max. 16 bytes)
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CCON, CPOS, ... PNU…/file PNU… PNU...
Tab. A.1 FHPP message with parameter channel (FPC)
Structure of the parameter channel (FPC)
The following tables show the byte assignment of the FPC parameter channel.
Data FPC parameter channel (byte 1 ... 8)
1 2 3 4 5 6 7 8
Control data
(O data)
FPC control data
Status data
(I data)
FPC status data
Tab. A.2 Cyclical I/O data FHPP st FPC
In the FPC control/status data, the EMCA only supports the extended functions of the
expanded Festo Parameter Channel EFPC (Enhanced Festo Parameter Channel)
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Section A.2.