Delta DVP-20PM User Manual

5 Applied Instructions and Basic Usage
5.8 Introduction of the Pins in a Motion Control Function Block
5.8.1 Definitions of Input Pins/Output Pins
Common input pins and output pins in motion control function blocks are listed below. The pins listed below
do not appear in a single motion control function block. For example, a motion control function block only
has one input pin, that is, it has either the Execute input pin or the Enable input pin.
Input pin
Name Description Format Setting value
Execute Starting the motion control function block BOOL True/False
Enable Starting the motion control function block BOOL True/False
Output pin
Name Description Format Setting value
Done
The execution of the function block is
complete.
BOOL
There is a transition in the Done output pin’s
signal from low to high when the execution of
motion control function block is complete.
Valid An output value is valid. BOOL
There is a transition in the Valid output pin’s
signal from low to high when there is a
transition in the Enable input pin’s signal from
low to high.
Busy
The motion control function block is
being executed.
BOOL
There is a transition in the Busy output pin’s
signal from low to high when there is a
transition in the Execute input pin’s signal from
low to high.
Aborted
The execution of the motion control
function block is interrupted by a
command.
BOOL
There is a transition in the Aborted output pin’s
signal from low to high when the execution of
the motion control function block is interrupted
by a command.
Error An error occurs in a function block. BOOL
There is a transition in the Error output pin’s
signal from low to high when an error occurs in
the motion control function block.
A motion control function block has either the Execute input pin or the Enable input pin. The Execute input
pin/The Enable input pin in a motion control function block is used to start the motion control function block.
A motion control function block generally has the Busy output pin and the Done output pin. The Busy
output pin and the Done output pin in a function block indicate the state of the motion control function block.
If the execution of motion control function block is to be interrupted by another motion control function
block, the Aborted output pin will be added to the motion control function block. Besides, the Error output
pin in a motion control function block is used to indicate that an error occurs in the motion control function
block when the motion control function block is executed.
A motion control function block has not only the Execute input pin/the Enable input pin, but also value/state
input pins. The characteristics of the value/state input pins are described below.
 Use of input values
 If the input pin that a motion control function block has is the Execute input pin, values are used
when there is a transition in the Execute input pin’s signal from low to high. If a new value is
created, it becomes valid when the Execute input pin is triggered again.
 If the input pin that a motion control function block has is the Enable input pin, values are used
when there is a transition in the Enable input pin’s signal from low to high. Compared with the
Execute input pin, the Enable input pin is used more often when a value used is updated
repeatedly.
 An input value exceeds a range.
After a motion control function block is started, the input values which are not in ranges allowed will be
limited, or result in an error occurring in the motion control function block. If an error occurring in a
motion control function block results in an error occurring in an axis, the motion control function block is
applied incorrectly. Users should prevent incorrect values from being generated in an applied program.
 Output pins are mutually exclusive.
 If the input pin that a motion control function block has is the Execute input pin, only the Busy
DVP-20PM Application Manual
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Delta DVP-20PM Specifications

General

Brand	Delta
Model	DVP-20PM
Category	Controller
Language	English