Cyclic Parametrising In Parametrising Mode - Festo CPX Series Manual

6. Parametrisation
6.2

Cyclic parametrising in parametrising mode

FPC in the cyclic I/O data (see also I/O allocation in section 2.2.6)
Byte 1
Output CCON
data data
Input SCON
data data
Tab. 6/6: FPC in the cyclic I/O data
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
In parametrising mode the FPC can be used to transmit one
parameter at a time in the cyclic I/O data.
The PLC enters the request in the output data and waits until
the CMAX has entered a response in the input data. This pro
cess takes several bus cycles.
Byte 2 Byte 3
Subindex Parameter identifier
Request byte 1 ... 7 of the FPC, see section 6.1, Tab. 6/1
Subindex Parameter identifier
Response byte 1 ... 7 of the FPC, see section 6.1, Tab. 6/1
In the first byte, the control byte CCON is transmitted which
controls the operating mode and controller enable. The CMAX
responds with the SCON status byte.
Please note that the CCON.STOP bit must not be set since the
CMAX cannot switch to operation enabled" status in para−
metrising mode.
CCON.STOP = 1 leads to a warning.
Byte 4 Byte 5 Byte 6 Byte 7
Parameter value
Parameter value
Byte 8
6−7