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Found 5 results

  1. Hello all, I have an 11 bit absolute rotary encoder that outputs in gray code. Here is datasheet on it: https://cdn.automationdirect.com/static/specs/encodermda.pdf This is needed for determining the position of the shaft on an engine. I am fairly new to Unitronics and Visilogic. I have a V700 with the V200-18-E3XB snap on. I have looked at other answers on this topic and have created a ladder diagram based on this format: http://www.plcdev.com/using_ladder_logic_for_gray_code_conversion However, I am still stuck when it comes to getting the binary to decimal and then being able to read the position output from the encoder on the HMI. I am a college student working on my senior capstone. Any and all help is appreciated. Thanks, Robby
  2. Hi, I opened U90 help files by mistake instead of Vision help files , and found that for HSC it says "Counter value is an integer with a range of -32768 to +32767. After the counter reaches the maximum value of +32767 it will continue to count in the negative range. " I couldn't find similar statement in VisiLogic help files. Now, I plan to use Vision controler V430, and in Technical Specifications for V430-J-TR34 it says that hardware counter has resolution of 32-bit. Does that mean that I can link ML to high speed inputs and they will count to 2^31? I am using two shaft encoders if it's of any matter. I wasn't even thinking about this question, but since accidentally I looked at U90 help it's been bugging me.
  3. We have connected an encoder to M91 2 R1 and cannot get the reading in the Memory Interger Value. We are getting a value which keeps on incrementing as we rotate the Shaft of the Encoder. Can anyone send me a sample prog so that i can check if any mistakes have been made. The same programme is working with the same encoder programmed a few months back.
  4. I wrote a program using a shaft encoder (x2) high speed input. I have logic in my programming converting input pulses from the encoder to display length of material. On the display the length will only go up to 94", when it reach 94" it starts counting down to 0. Why won't it go past 94"?
  5. Good Day Everybody Recently i acquired the plc-m91-2-T1 and i need it for an application where i use a shaft encoder with 2000 pulses per rev (PPR) At first i tried to add both of the channels (input 0 for channel 1 and input 2 for channel 2) as shown in my program (attached) and it almost made it well for one direction (it counted 1900 of 2000 pulses) so i thought it was the speed of the counter so i reduced the pulses to 250 with a FlipFlop JK Circuit. Any ideas or suggestions of how can i use the shaft encoder easier? Also i need it for both directions. Also i wanna know if there is any support in Spanish.
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