ABB PXAH401 After sales service is provided for the control card of the power supply device

Description

Packaging details: if you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.

Price problem: if you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.

The I/O system handles input and output signals to and from the controller. Below are the
parts of the system described, as well as common types of signals.
The I/O system window is used to view and set previously configured signals, and to activate
and deactivate I/O units.
The I/O system
The I/O system of a controller consists of I/O buses, I/O units and I/O signals. The I/O buses
are the controller’s connections for I/O units (for instance I/O boards) and the I/O units
contain channels for the actual signals.
The I/O buses and units are displayed in the robot view, as child nodes under each controller
and the I/O signals are displayed in the I/O window.
I/O signals
I/O signals are used to communicate between the controller and external equipment, or to
change variables within a robot program.
Input signals
Input signals notify something for the controller, for instance a feeder belt can set an input
signal when it has positioned a work piece. The input signal can then be programmed to start
a specific part of the robot program.
Output signals
The controller uses output signals to notify that a specified condition has been fulfilled. For
instance, after the robot has finished its sequence, an output signal can be set. This signal can
then be programmed to start a feeder belt, update a counter or trigger any other action.
Simulated signals
A simulated signal is a signal that is manually given a specific value that overrides the actual
signal. Thus simulated signals might be useful for testing robot programs without activating
or running equipment.
Virtual signals
Virtual signals are signals that are not configured to belong to a physical I/O unit. Instead,
they reside inside the controller’s memory. A common use for virtual signals is to set variables
and store changes in a robot program.
Procedures
For using the I/O system window, see Inputs / Outputs on page 326.
For adding a signal, see Add Signals on page 337.