Technical Manual PD4-E-M (EtherCAT)
6 Operating modes
Torque curve
Target torque 6071
h
Torque slope
6087
h
1sec
To
rq
ue
1sec
Torque slope
6087
h
t
6.5 Homing
6.5.1 Overview
Description
The purpose of the homing method is to align the position zero point of the controller with an encoder
index or position switch.
Activation
To activate the mode, the value "6" must be set in object 6060
h
(Modes Of Operation) (see "CiA 402
If home switches and/or limit switches are used, these special functions must first be activated in the I/
O configuration (see "Digital inputs and outputs").
Controlword
The following bits in object 6040
(controlword) have a special function:
•
Bit 4: If the bit is set to "1", referencing is started. This is performed until either the reference
position is reached or bit 4 is reset to "0".
Statusword
The following bits in object 6041
(statusword) have a special function:
Bit 13
Bit 12
Bit 10
Description
0
0
0
Homing is performed
0
0
1
Homing is interrupted or not started
0
1
0
Homing confirmed, but target not yet reached
0
1
1
Homing completed
1
0
0
Error during homing, motor still turning
1
0
1
Error during homing, motor at standstill
Object entries
The following objects are necessary for controlling this mode:
•
(Home Offset): Specifies the difference between the zero position of the controller and the
reference point of the machine in user-defined units.
•
h
(Homing Method):
Method to be used for referencing (see "Homing method")
Version: 1.0.1 / FIR-v1748
62