ABlearner
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Hello, Thanks for the answer. Basically I would like to check if an array value wether is chaning or not. If its change then I wanna start a timer and, keep that timer for the preset 3 seconds. I will use this 3 seconds for sending a bit for an another output for that 3 sec. The timer reset part is needed because of the array value change within 3 sec then we have to clear the timer and start from zero. I can provide the logic what I wrote in rs logix 5000. Thats works properly. Thanks ahead.
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Hi I have to make a little program in RS logix 500 but it seems not really working. I have been working before with rslogix 5000, in that this program works well. Here its not really, Can anyone tell me what can it be the wrong thing in the logic. I already know here in one row i can use only one output not like in rslogix 5000. Thanks ahead. I have attached the logic.
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Hello, I have to make a ladder diagram in GX works 2. I have to use a logic which is calculate the the power of a number. Example: 2^0 = 1; 2^4 = 16............. and so on. Which insutruction can I use ? and how ? Can someone give me an example ? I have found EXP and POW instruction, but they are not really works for me. Its important the base can be always 2 I would like to change only the numbers. Thanks ahead.
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Hello guys! Could you please someone help for me with the next topic. I have a 1756_L73S Controller. Unfortunatelly, sometimes, the time is going to change in the controller. I have checked the settings under Controller Properties menu. I have chosed the Date/Time. I can see the syncronisation is allowed, the question is how can I now what is it sync with ? Is it an NTP server or what ? I have also checked there is no any time module in the hardver configuration. If I'm clicking the advance menu I couldn't see any informatio which is relevant, at least for me. What am I missing ? I also did like, choosed to set the time the same as the workstation, but for the next day the time has changed again. Thanks ahead guys.
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Thank you so much guys, the information what you guys shared are very useful. I made a little example program, to check how is it working. Its working properly I guess. @pturmel Could you please share with me an example ladder logic, about your solution. Some part of that dispriction is not clear to me yet. Thanks ahead.
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Firstly, thank you for your answer! Secondly, yes they are the same size. Im trying to make the proper code for the task. I made in the first row, a signal when a bad product is detecting I raise a counter like 1, 2, 3 4. ... and so on. In the next row I check wether the counter is equal to 1 if yes, then I start to accumulate the pulses from the encoder until its reaches the 500, at that point I make a Stop signal, then I clear the counter. Of course there is a possibility, there is a new NG product can appear before the former one stored out, so if the Bad_product_appear bit is active again then the Counting counter isgoing to be 2 and it sarts to count also for the second, as the same way as before. My question is what if I have to make like 200 row like this, I think there is a better solution. Anybody can help this, if my explanation is poor Im sorry, I try to answer for every question. Thanks ahead.
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Hello Guys! I would like to ask your help. I have a conveyor. At the begining of the conveyor i have a sensor which is declare wether a product is good or not. After that 5 meters i have to store out the bad product. In the exact place i have to stop the cv and store out. I have an encoder on the cv so i can calculate the correct position. The only problem is i have to write a tracking because i cant know when will the next wrong product coming. I could make some calculation making couple hundred rungs but its not sounds workable. Thanks ahead for any help.
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Hi! A have a question about how can I send the current User data from the Panelview (HMI) to the PLC. Its an allen bradley PLC 1756 L71. In the Factory Talk view I tried to make a register and to move in it the current user, but unfortunatelly its not working. Is anybody here who can help me with this ? Thanks ahead. Br.
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Hello Guys. Is it possible to use an fr-a840 to use in the same time positioning control and also in speed control mode ? In the moment the vfd is in speed control mode. But now i also have to need to stop the conveyor in certain position. It will be a new feature. If its not possible, do i need a hsc ? The speed of the conveyor is 20 m/min and the accuracy should be within 3 mm. Could anybody help me with this. Thanks ahead.
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Hello Guys. Is it possible to use an fr-a840 to use in the same time positioning control and also in speed control mode ? In the moment the vfd is in speed control mode. But now i also have to need to stop the conveyor in certain position. It will be a new feature. If its not possible, do i need a hsc ? The speed of the conveyor is 20 m/min and the accuracy should be within 3 mm. Could anybody help me with this. Thanks ahead.
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Thank you for the thorough answer. Lets assume the drive cant do it. In this case do i need an encoder on the conveyor ? The conveyor maximum speed is 20 m/min. In this case do i need a high speed counter module too in the plc ? The precision should be within 3 mm. Thanks.
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Hello thank you for the answer. Yes i have an encoder on the the conveyor motor. Is it enough ? Or do i have to apply also an i dependent one on the conveyor directly ? Thanks.
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Hello Guys, I have a Mitsubishi A8000 series vfd with an encoder card and also encoder. With analog (0-10V) signal i can read back the current speed. The conveyor convey paper sheets. Occasionally they change the width of the paper but the the two type of paper is connected. We have a camera on the begging of the conveyor, and we would like to lets say cut it 2 meter later. But the position should be very precise otherwise we are not cut it in the good position. The cutting procedure would happen also an asynchronous motor or with servo motor. Is it possible to write a tracking program and cut paper sheet in a good position ? My plane is to stop the CV in the position and waiting for the cut and go on. The plc is Allen Bradley, control logix 5580. Any tip would be appreciated. Thank you so much.
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Hello Guys! I have a problem what I can't really solve. In factory talk view (10.0) I wanna use a momentary push button. When I start the project, and I click on it nothing happening, the button activate only when I release it. Its like there is an OSF instruction inside. I want the button activate until I push. May I use a wrong button ? Could you guy please help me with this? Thanks ahead.
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Thanks for the feedback. The encoder is sew ES7C/AA. TTL/HTL encoder. So actually none of them. Its a push pull output encoder. The option card type is FR A8AP. So if i can get position then how ? I already use the inverter to read the speed of the motor. Thanks ahead.
