
Manual – MOVI-PLC® Application Solution "SyncCrane"
79
7
Project planning for auxiliary drives
Auxiliary Drive (Auxiliary Axis)
7.2
Project planning for auxiliary drives
7.2.1
Functional description
Functional
characteristics
The auxiliary drives provide the following functional characteristics:
7.2.2
Process data assignment
The higher-level controller (PLC) sends a process data range of 4 PD for each auxiliary
drive via PROFIBUS.
The following figure shows data exchange with 4 process data words:
Addressing of process data words:
Mode
Profile 1
Pos 16 bit
Profile 2
Pos 32 bit
Profile 3
Velocity
Mode 0
Default mode
Default mode
Default mode
Mode 1
Jog mode
Jog mode
Jog mode with velocity specification
1)
1) with startup of the "velocity" profile.
Mode 2
Referencing mode
Referencing mode
Default mode
Mode 3
Positioning mode
Positioning mode
Default mode
Mode
Description
Jog mode
•
The drive is moved clockwise or counterclockwise with position control using
two bits for direction selection.
•
Velocity and ramp can be specified via fieldbus as required depending on the
profile.
Jog mode with star-
tup of the "velocity"
profile
•
The set operating mode can also be used without encoder.
•
The drive is moved clockwise or counterclockwise using two bits for direction
selection.
•
Velocity and ramp can be specified via fieldbus as required.
Referencing mode
•
Reference travel and position adjustment of the external encoder are initiated
with the start signal.
•
Reference travel establishes the reference point (machine zero) for absolute
positioning operations.
Positioning mode
•
When the axes are referenced and start is set, the received target position
results in a positioning operation.
•
Velocity and ramp can be specified via fieldbus as required depending on the
profile.
657595787
Number of auxiliary drives
1
2
3
4
Axis 1 PD
29 ... 32
25 ... 28
21 ... 24
17 ... 20
Axis 2 PD
–
29 ... 32
25 ... 28
21 ... 24
Axis 3 PD
–
–
29 ... 32
25 ... 28
Axis 4 PD
–
–
–
29 ... 32
PO1
PO2
PO3
PO4
PI1
PI2
PI3
PI4
2
2
2
2
0
1
2
3
2
2
2
4
5
6
2
4
6
1
3
5
X32
2
4
6
1
3
5
X33
X30
2
4
6
1
3
5
8
10
12
7
9
11
X3
1
X34
MOVI-
PLC
Содержание MOVI-PLC
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