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  1. ctipete

    Very low cost PLC with RS232

    you need to use a Koyo DL06 or DL205 (with 260 CPU). Each has ASCII input instuctions. www.automationdirect.com Pete
  2. ctipete

    4-20 mA OUT to 1mA IN?

    Just installed a new pH controller. New controller has 4-20mA output for data recorder. Old recorder says input sensitivity equals 1mA. Do they mean the input is 0 - 1mA? If so are there any signal converters on the market to convert 4-20mA, or 0-20mA, to 0-1mA? P.S. The recorder is a...
  3. ctipete

    Interfacing DL-205 with an analog source

    you can wire them in SERIES but you'll have to recalibrate the first system when done.
  4. ctipete

    DL05 SOFTWARE WONT ALLOW FORCES

    Check out: http://forum1.automationdirect.com/cgi-bin/Ultimate.cgi
  5. ctipete

    AutomationDirect Ethernet I/O ActiveX

    I'm not too sure of your app. but look into Automation Dir's "DSData" Server.
  6. ctipete

    Direct parallel cable

    You can't use a standard "straight" through cable.... They make a special cable for this purpose (I forget the name). Maybe someone else on this forum can tell you - but if you go to your local Radio Shack I'm sure they carry it... Good luck
  7. ctipete

    removing ceiling joists?

    I'm planning on converting a small office in my house into a large bathroom. I had an idea last night that seems pretty interesting to me. I would like to remove the ceiling (drywall and ceiling joists) finish the attic portion above the room and make it a vaulted ceiling. I know I'll probably...
  8. ctipete

    4 - 20mA Maximum Transmission Length

    How far can I reliably and accurately transmit a 4-20 mA Signal over a twisted pair shielded cable? I need to go about 150 ft. What AWG cable should I use? I'll be connecting a voltage/current meter with a 4-20mA output to a PLC. Thanks guys, Pete
  9. ctipete

    tenths, hundredths?

    THANK YOU SKILLS... Sorry it has taken me so long to reply but I live in the northeast and we just got hammered with 30 inches of snow... Anyway thanks for the info...I'll see what I can do with it. If you can help me a little more that would be great. This is what I have, and what I need...
  10. ctipete

    tenths, hundredths?

    Thanks Skills, The objective of the system is to measure the nickel concentration of a plating solution. The concentration of a nickel plating solution is measured in g/L, with 6 g/L considered a 100% concentration. The color of a 100% Nickel plating solution is a deep green and lightens...
  11. ctipete

    tenths, hundredths?

    I'm in the conception phase of a new project and wondering if I can use a PLC as the control device. I need to measure the opacity of a solution, most likely using a diode-receiver pair with a proportional voltage output. My question is how precise of a measurement can I obtain with a plc...

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