2 structure of the cyclic i/o data (fhpp standard), Structure of the cyclic i/o data (fhpp standard) – Festo Контроллеры двигателя SFC-LAC User Manual

Page 136

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5. Commissioning

5−32

Festo GDCP−SFC−LACI−DN−EN en 0812NH

5.5.2

Structure of the cyclic I/O data (FHPP standard)

FHPP standard contains 8 bytes of input and 8 bytes of
output data:

data

Byte 1

Byte 2

Byte 3

Byte 4

Byte 5

Byte 6

Byte 7

Byte 8

Output
data

Bytes 1 and 2 (fixed)
are retained in each
operating mode and
transmit control and

Bytes 3 to 8 depend on the operating mode selected (Direct mode,
Record select) and transmit further control and status bytes as well
as setpoint and actual values:
Ĉ Record number or target position in the output data

Input
data

transmit control and
status bytes for enĆ
abling the SFC−LACI
and for setting the
operating modes.

Ĉ Record number or target position in the output data
Ĉ Feedback of actual position and record number in the input data
Ĉ Further setpoint and actual values depending on the operating

mode

I/O data: Record selection

data

Byte 1

Byte 2

Byte 3

Byte 4

Byte 5

Byte 6

Byte 7

Byte 8

Output
data

CCON

CPOS

Record
no.

Reserved

Reserved

Input
data

SCON

SPOS

Record
no.

RSB

Actual position

I/O data: Direct mode

data

Byte 1

Byte 2

Byte 3

Byte 4

Byte 5

Byte 6

Byte 7

Byte 8

Output
data

CCON

CPOS

CDIR

Setpoint
value 1
(velocity)

Setpoint value 2
(position, force/torque,...)

Input
data

SCON

SPOS

SDIR

Actual
value 1
(velocity,
force/
torque,...)

Actual value 2
(actual position)

Further 8 bytes I/O as per FHPP−FPC
In the cyclic data a further 8 bytes input data and 8 bytes
output data are permitted for transferring parameters in
accordance with the FPC protocol (Festo Parameter Channel)
} section B.2.

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