Festo Электромотор MTR-DCI - Manual (Page 299)

C. The Command Interpreter (CI)
C-25
Festo P.BE-MTR-DCI-DN-EN en 1209a
DeviceNet I/O Data length
CI 2FF5h 00h Var uint8 rw
Description Protocol (data/device profile).
Values:
0 (0x00):
Festo FHPP Standard (8 byte I/O) = default
1 (0x01): Festo FHPP Standard + FPC (2 x 8 byte I/O)
If the FPC is not required during operation (e.g. because parameter changes are
performed using Explicit Messaging) then the data width can be reduced to
8 bytes. This switches off the FPC and optimises the bus transmissions. The
setting is permanently stored in the device. Switching over at runtime is not
possible. Any changes made do not take effect until the next time the device is
switched on again.