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  • The What, Why & How of PLCs
    . A PLC consists of several PLC controlled system, the only investigate and implement new tools components: a CPU (Central change would be to the program and automation concepts will find Processing Unit) and I/O (Input/ stored in the memory. For example, their products being produced with a Output
  • PLCs Pack it in
    Programmable automation controllers enhance PLC's process-control capabilities. Programmable automation controllers, like these from National Instruments Corp., complement and enhance PLC operations by performing special tasks above and beyond an average PLC's capabilities, such as machine vision
  • Overlapping VLANs (.pdf)
    . A key feature of N-Tron's VLAN (tagged and port) implementation is the concept of overlapping members. We will discuss Port VLAN first. Port VLANs logically segment a switch transparently. Referring to Figure 1, using a 508TX-A, consider the following example where the Office LAN uplink is on Port 1
  • FPGAs put PLCs in motion
    , where one C program works well on any computer, every PLC vendor has its own flavor of IEC 61131-3 compliant specifications. But all brands have a basic architecture that is similar. A look at how a PLC operates illustrates the similarities. For example, to turn on an LED, any PLC needs three
  • Process Analytical Technologies 101
    to collect? Will you need more than one type of measurement to determine, for example, whether product is dry enough or a reaction has gone to completion? Where will data reside after collecting it? Will they be stored on a standalone instrument or fed into a programmable logic controller (PLC)? Does
  • Making sense of motion networks
    to several motors. The central PC could be a software program, a microprocessor, or PLC. An example of a flat motion-control system is a printing press with multiple, servocontrolled spools. Because timing and latency are critical metrics in such a machine, a central controller (often a PC or PLC
  • Machine control beyond PLCs
    are actually implemented in an FPGA that is programmed with LabView. Unlike traditional PC or PLC processors, FPGAs are parallel processors. Additional loops do not affect the performance of other independent loops. In this example, the counter and the PID loop execute in parallel on the FPGA
  • Interfacing a Galil Controller with a Cognex Barcode Scanner (.pdf)
    the ability to send bar code results directly to a Galil Ethernet motion controller such as the DMC-40x0 or DMC-21x3. In addition, the RIO pocket PLC from Galil would work in the same manner. In this example we will use a DMC-4020 and a Cognex Dataman 200 series bar code scanner.

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