Festo EMCA-EC-67 CO Series, Description

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A Festo Parameter Channel (FPC)
Festo – EMCA-EC-C-HP-EN – 2017-11e – English 225
A.2 Enhanced Festo Parameter Channel (EFPC)
The EFPC extended Festo parameter channel permits automated transmission of parameters and larger
datasets in the form of a parameter file.
Modules with which transmission can be easily implemented are available for some selec­
ted controllers at
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www.festo.com/sp.
In general, observe the specification in the bus master for representation of words and
double words (Intel/Motorola). For example, over CANopen, EtherNet/IP representation
is in “Little endian” (low-order byte first).
A.2.1 Structure of the Enhanced Festo Parameter Channel (EFPC)
Data Expanded parameter channel EFPC (byte 1 ... 8)
1 2 3 4 5 6 7 8
Transmission mode: FHPP parameter (PNU)
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Control data
(O data)
FPCC Sub-in­
dex
Parameter number
(PNU)
Parameter value (PWE)
Status data
(I data)
FPCS
Transmission mode: parameter file
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Control data
(O data)
FPCC Package
ID
User data package
Status data
(I data)
FPCS
Tab. A.3 Structure of the expanded parameter channel (EFPC)
A.2.2 Switch over transmission mode (parameter/file)
The transmission mode “FHPP Parameter (PNU) and “Parameter file” is switched via bits 4 ... 7 of byte 1
(FPCC/FPCS).
Data Transmission mode (byte 1)
Bit 7 ... 4 Bit 3 ... 0 Description
FPCC/FPCS Mode Req-ID/
Res-ID
Function
Control/
status data
(I/O data)
0001 xxxx (x) Transmission of “Parameter (PNU)” activated
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0100 xxxx (x) Parameter file transmission activated
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Tab. A.4 Switch over transmission mode (parameter/file)