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sanyc

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About sanyc

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  1. So, I have a 4-20 mA analog input and I want to add up the result every (unknown - have to be determined I think) time so that I get the total value. The 4-20 mA signal comes from a weight scale flow controller that reads in T/hr (Tons per hour). By adding that value up I want to obtain the total number of tons that passed so far through the scale. I am using a Unistream 7'' and this is what I came up with so far - which is wrong. What the following does is: it linearizes every second the incoming analog value. A is the analog input. B is X1 = 0 and C is Y1 = 0. D is X2 = 8191 which is the 13-bit resolution of the 0402N module. Then I am adding the result to a memory integer which updates itself. For E, I have Y2 = 60, which comes from linearizing the analog input to Tons/sec. So, how can I implement what I am trying to achieve?
  2. V120 sounds a nice option, with configurable ports for either RS232 or RS485
  3. Thanks for your replies. Also samba has an integrated RS232 and I can expand it with V100-17-RS4. Can I order the PLC to come with the integrated port as an RS485 instead of RS232?
  4. Hi, How many serial connections can I have on a vision series PLC? For example I want to attach a modem on a V130 in order to remotely send commands and at the same time I want to connect an LED screen with an RS232 connection in order for the PLC to send commands and write on the screen.
  5. UIA-0402N Flow Meter Wiring

    Thanks everyone, problem solved and I am now reading very good values. The problem turned out to be in the linearization, I set my Y limits to Y1 = 0 and Y2 = 18000, because I read in the manual that at 1'' the Flow Meter could read up to 18000 kg/h. Eventually I scrolled the screen inside the Meter and found out that at 20 mA it gives maximum 6000 kg/h. So setting the linearization to Y1 = 1 and Y2 = 6000 solved the problem. Thanks again
  6. UIA-0402N Flow Meter Wiring

    Here are some more shots from the manual: The model I have is designated as: 80***-***********A
  7. UIA-0402N Flow Meter Wiring

    The transmitter is a Promass F80 Flow Meter. I also have the manual for it. Attached is a picture showing its output signals. My model is the one designated as HART
  8. UIA-0402N Flow Meter Wiring

    Thanks Denis, Indeed the transmitter has a separate 230V AC power supply. The common on my expansion module is connected to the 0V DC. Then a wire from the (-) of the transmitter goes to the current input on the 0204n card. The positive from the transmitter I 've tried both connected to the (+) and the (-) of the 24V DC supply with no success. Attached is a photo showing what I did
  9. UIA-0402N Flow Meter Wiring

    I figured the last question; whether its 0-20 mA or 4-20 mA I can measure the current without any flow to determine the value of current so for a 4-20 mA without flow I should get 4 mA.
  10. Hi, I am trying to wire a 2 wire 0/4-20 mA analog output Flow Meter to a UIA-0204N I/O module, but It doesn't seem I get the correct reading. The output of the sensor is active. From this I understand that I don't need to supply any DC voltage to the two wires of the sensor, thus one goes to 0V and the other to the input of my card. I also have 0V for the common on my card. Do I also need to include a resistor between the wires of the sensor? Also, being an active output from the sensor the card needs to act like a current sink. How is that achieved? One last thing: how can I easily determine if its 0-20 mA or 4-20 mA if it doesn't clearly specify it on the datasheet of the sensor? Thanks
  11. I have problems communicating with the JZ20-JR31. I am using a usb connection (Port COM 10). A serial connection is not an option for me at the moment. So, I manage to establish connection via Controller --> M90 OPLC Settings --> PC Communication Port Settings --> Get Version. Then when I try to download the program it looses connection. 15 minutes ago I was able to download the program but it would still loose connection every 2-3 seconds or so. Now It won't even connect. I tried running U90 as administrator, Nothing. I tried changing USB ports, Nothing. What else should I try? Edit: I am using windows 7.
  12. Hi, Can I use a Numeric Box in Unilogic without its background, i.e: making it transparent? Couldn't find that option.
  13. Thank you all for the replies. I had the MI0 link to AN0 in the hardware configuration. The problem turn out to be the pressure sensor I was using. I used another LVDT sensor and it worked great, thanks.
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