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α
Simple Application Controllers
6.2
The Program Edit Mode - Begin to Program
Programs for the
Edit is the default mode for the VLS software. The
FBD Base and connecting the various components together with the wiring analyzer. There
are five types of system components that can be placed on the FBD base. A short description
of the function and placement locations possible for the various components follows.
6.2.1
Inputs
System Inputs receive data from the devices wired to the actual controller and
can be either the digital or analog signal type. The digital units transmit an On
or Off signal; Analog inputs transfer a data value. The icons can be found under
the IN heading of the Accessories Toolbar at the left of the FBD base.
The digital signals can be placed on the Input rectangles at the left of the FBD
base or on the base itself. Each icon functions in the same way. The different
icons have been developed to aid in the documentation and understanding of
the program. Use an input icon that corresponds to the actual input device to
be connected to the controller. The names of the signals will appear when the
mouse arrow is placed on the icon.
The analog signals can be placed only in Input Rectangles I01 - I08. The
controller inputs act as an 8 bit Analog/Digital converter when the analog signal
is placed in the Input Rectangles.
Four AS-Interface bits, E01 - E04, are available when using the 20 I/O versions
of the Alpha controller and VLS Version 1.30 or above. These inputs can be
placed anywhere on the FBD base and will not be counted toward the number
of system Inputs.
6.2.2
Front Panel Keys
There are eight signals that correspond to the front panel keys and these
signals may be used as additional digital inputs. These are the ESC, OK, "+",
"-",
,
,
and
Run mode to active the signals.
These keys may be placed only on the FBD Base and can be found in the IN
heading of the Accessories Toolbar. The names of the signals will appear
when the mouse arrow is placed on the icon.
α
controller can be created and edited from the Program Edit Mode. Program
keys. Press the front panel keys while the
Function Block Diagram (FBD) Operation 6
α
is programmed by placing items on the
α
controller is in
6-2
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