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  1. MustangDan

    Frequency "Limit" Relay

    Brandnew, Not sure what type of project you're working on, but in an industrial setting, I know I prefer to choose off-the-shelf components that can readily be replaced (without fabrication or programming on your part). My suggestion is to use a Redlion Controls IFMR (Integrated Frequency...
  2. MustangDan

    RS-232 Serial Port for PLC/HMI/Drive Programming

    Thanks alot, jsalls! I checked out the Keyspan unit, bought it, and am currently using it with great success and a big grin. [2thumbsup]
  3. MustangDan

    RS-232 Serial Port for PLC/HMI/Drive Programming

    My laptop doesn't have a serial communication port. Now, I would like to use it to program various industrial staples like PLC's, HMI's, AC/DC/Servo Drives. I believe my best choice to be a Serial RS-232 PCMCIA Card, but I am also finding various USB to RS-232 converters. One of my biggest...
  4. MustangDan

    Can't decide on an HMI from Siemens

    Thanks for the responses skogsgurra and xyzz. After speaking to a Siemens tech support guru, he agreed that fault messages could be stored in V-memory. Then, I will define a message display on the HMI to look at a blank V-memory location. When a fault occurs, I will write the appropriate...
  5. MustangDan

    Can't decide on an HMI from Siemens

    Please excuse my ignorance, I'm relatively new to PLC and HMI programming. I have been given the task of monitoring twelve (12) analog signals with a Siemens S7-200 PLC. This PLC is to be connected to a touchscreen. The operator will impose four (4) limits on each analog signal - a hi/lo...
  6. MustangDan

    CAD software distinctions

    johanna, I, personally, am only familiar with AutoCAD. I use it to create electrical schematics and assembly drawings. My company has chosen to utilize Unigraphics as their mechanical CAD software. To answer your question, "COULD a single CAD software package be used for both mechanical...
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