Festo Электромотор MTR-DCI - Manual (Page 203)

A. Technical appendix
A-13
Festo P.BE-MTR-DCI-PB-EN en 1209a
A.4 Converting the units of measurement
Unit of measurement systems
For accessing parameters via FCT or the control panel, a unit
of measurement system must be defined, e.g.:
– Metric unit of measurement system for linear motions
(mm, mm/s, mm/s
2
)
– Imperial unit of measurement system for linear motions
(inch, inch/s, inch/s
2
)
– Angle unit of measurement system for rotational motions
(degree, degree/s, degree/s
2
) or (rev, rev/s, rev/s
2
)
Conversion In the controller, all parameters are saved in increments
(inc, inc/s, inc/s
2
) and are not converted until they are writ-
ten in or read.
– For the control panel, the values are converted from the
internal base system into the measurement system set in
the firmware.
– For representation of values on the PC monitor, they are
converted within the FCT software.
– The transfer of values via the serial interface using CI
commands is done in increments and requires conversion
within the user software (PLC/IPC).
Parameters Conversion is carried out via the following parameters, de-
pending on the axis type set:
– “feed”: feed constant (dependent on the axis type).
– “enc”: encoder resolution = physical measuring steps per
motor revolution. On the MTR-DCI: pulse quadruplication
by digital interpolation.
– “gear”: gear reduction.