Motion Control I/O Modules
14-2
Overview
Complete Application-Ready
Platforms for General Motion Control
Tasks
Since the release of motion control cards in the 1990’s, Advantech has been developing
various types of motion control cards for users worldwide. Today, Advantech is still
focused on providing the most robust, cost-effective and application-ready platforms for
General Motion Control (GMC).
Advantech offers application-ready platforms that range from industrial workstations
and industrial-grade CPUs, to motion control, encoder input and isolated I/O cards
for general motion control (GMC) applications such as SMT/PCB, semiconductor and
LCD manufacturing machinery. Advantech provides a full-range of industrial computing
platforms that include high-brightness LCD displays, keypads, up to 20-slot backplanes
and redundant power supplies for machine builders.
Advantech motion control solutions have 3-axis, 4-axis and 6-axis inputs with pulse-
type and voltage-pulse models and the AMONet series of distributed motion modules.
Furthermore, these cards are supported by complete motion control libraries under
Windows OS, which are widely applied in GMC applications.
AMONet - Advantech Distributed
Motion Control Solutions
Motion control is growing in complexity as the number of axes in newly developed
machines with motion control increases each year. Distance is also becoming an issue, as
motors are located further and further away from the host computer. AMONet (Advantech
Motion Network) was engineered to tackle the problems of increasing spending on
wiring and maintenance of these complex motion control systems, and it also gets rid
of distance limitations.
The first series of distributed motion control products from Advantech are called the
AMONet RS-485 Series. AMONet RS-485 products are categorized as Master cards or
Slave modules. While the Master card is kept in the host PC, the slave modules can be
distributed so that they are next to motor drivers on the factory floor. The communication
speed between the AMONet RS-485 slave modules can be up to 20 Mbps. This makes
it possible to scan 2048 I/O points within 1.04 ms (or 1024 I/O points in 0.56 ms).
Furthermore, an AMONet RS-485 master will update the I/O status automatically, and
map data into local memory. Software running on the host PC can then read the status by
simply reading the onboard memory, so no polling of slave modules is necessary.
Each port of a master card can control up to 2048 I/O connections or 64 motion axes,
so future extensions are easily implemented. The distance between a master card and
its slave modules can be up to 100 meters, and this distance is covered with a low-cost
Cat 5 network cable. In addition to saving wiring costs - debugging and maintenance
is also simplified.
Another advantage of AMONet RS-485 is its compatibility with motor drivers from different
vendors. Advantech provides specially designed wiring boards for popular motion drivers
from vendors such as Panasonic, Mitsubishi and Yaskawa. This makes configuration
easier, as pin-to-pin cables can be used. Having a selection of motor vendors can also
be an advantage when sourcing of a certain motor is difficult.
Motion control and I/O functions with AMONet RS-485 use the same library. This unique
feature saves time, as programmers do not need to study both a motion library and an I/O
library. You can also connect to a manual pulse generator directly to adjust and calibrate
the system without having to write programs first.
AMONet makes machine building with motion control easier. The savings made on wiring
and programming effort, as well as the compatibility with a wide range of popular motors
have already led to many requests for AMONet products. Advantech is not content with the
current selection though. There are already plans to release more AMONet products based
on PCI, PC/104, and 1-axis motion slave modules as well as DI/O slave modules.
Wire-Saving/Long-Distance
System Architecture
(23 paginas)
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