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7
Operating modes
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
175
Value
Significance
-1
Invalid operating mode or change in operating mode
-11
User Position Mode
-13
User Velocity Mode
-14
User Torque Mode
1
Profile Position Mode (position controller with positioning mode)
3
Profile Velocity Mode (speed regulator with setpoint value ramp)
4
Profile Torque Mode (torque controller with setpoint value ramp)
6
Homing Mode (reference travel)
7
Interpolated Position Mode
8
Cyclic Synchronous Position Mode (only for EtherCAT)
The operating mode can only be set via the object modes_of_operation. Since a change in
operating mode can take some time, one must wait until the newly selected mode
appears in the object modes_of_operation_display. During this time, “Invalid operating
mode” (-1) may be displayed briefly.
7.2
Operating mode reference travel (homing mode)
7.2.1
Overview
This chapter describes how the motor controller searches for the initial position (also called point of
reference, reference point or zero point). There are various methods to determine this position,
whereby either the limit switch can be used at the end of the positioning range or a reference switch
(zero-point switch) within the possible travel distance. To achieve a reproducibility that is as large as
possible, the zero pulse of the angle encoder used (resolver, incremental encoder, etc.) can be included
with some methods.
Homing
controlword
homing_speeds
homing_acceleration
homing_offset
statusword
position_demand_value
Fig. 7.1
Reference travel
The user can determine the speed, acceleration and type of reference travel . With the object
home_offset, the zero position of the drive can be displaced to any position desired.