Virtual Parameters - Control Techniques UD70 User Manual

10.2

Virtual parameters

Virtual parameters are special parameter which are not part of the standard
parameter-set of the Drive. Virtual parameters exist only in the
are used for the following:
• Accessing values not present as standard Drive parameters
(eg. encoder counters)
• Accessing Drive parameters at a faster rate
• Accessing Drive parameters at an increased resolution
• Accessing
parameters, I/O Box data, etc
Virtual parameters can be accessed by a DPL program or by serial
communications. The virtual menus are explained in the following order:
90, 91, 70 ~ 73, 85, 86, 88, 80
Menu 90
General parameters
Note that update rate codes L2 and L3 in the following table are explained at
the end of the table. Where no update rate is shown, it does not apply.
Parameter
#90.01
#90.03
#90.05
#90.06
#90.10
#90.11
10-4 Parameters
parameters such as Timer/counter Unit control
UD70
Description
Main encoder/resolver position (RO)
Auxiliary encoder position (RO)
Used only when a - encoder option module is fitted in the
SIN COS
Drive and the Drive software is version 3 or higher
Number of revolutions of a
SIN
Update rate: L2
Used only when a - encoder option module is fitted in the
SIN COS
Drive and the Drive software is version 3 or higher
Position of a - encoder (RO)
SIN COS
#90.6 indicates only the eight least significant bits.
Update rate: L2
Drive mode identifier (RO)
Codes are as follows:
16 Open Loop
17 Closed Loop Vector
18 Servo
Drive status and control word
#90.11 indicates the value of the Drive status parameter (#10.40).
The control word can be written to #90.11 as shown in the
following table.
UD70
- encoder (RO)
COS
Issue code: 70nu2
and
UD70