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batis43212 joined the community
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Thank you very much for your reply! But I did it a bit other way. So, VICTORY! I finally did it, though Unitronics Support wrote to me that it's not possible to position UMD0010C-B3 via Modbus. In fact, it's possible - I'm successfully positioning the servo via Modbus RTU. I really have to go now, but I'll edit this post later to explain it better.
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V570 bitmaps SDW5 and SDW6
kratmel replied to klijo's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
In general, I always try to avoid shorting the outputs by using intermediate conventional or solid state relays. Therefore, unfortunately, I cannot state whether it is possible to determine which output is short-circuited. I think that the state of a short circuit can be determined only in those modules where there are solid-state PNP outputs. For npn, most likely, this function does not work. One more moment - it is not known for sure whether the SDW5 -6 bits remain on when there is no command to turn on the output. Therefore, it is probably necessary to programmatically make logic that will remember in DW the state of this register and disable the outputs until the user confirms that all problems have been eliminated. Contact support@unitronics.com with this question and post the answer here in the thread. -
V570 bitmaps SDW5 and SDW6
klijo replied to klijo's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
Thanks! Is it possible to find out which output has a short circuit (for example O1 or O32)? -
fixdot joined the community
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moodcare joined the community
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I hear you. It seems like this applies to every brand of servo I've ever worked with 😒 I don't have a UMD in front of me so I can't fill out your form. Sorry. This may be the problem. You didn't included a diagram of how you actually wired it. I posted an explanation about connecting servo and stepper pulse inputs in the Visilogic forum. It applies here, too. Let us know if this helps. Joe T.
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Unfortunately UniStream will stomp on your program if you try this. If you change to a model that has a different I/O configuration then you have to delete any reference to onboard I/O points that are different. I would make some buffer input and output bit arrays that match the size of the -T42 onboard I/O. Then do a search and replace (Edit tab) for each real I/O point and replace it with the buffer bit. Finally, when you want to put it back in the field add a couple of blocks to copy real inputs to your input bit array and your output bit array to the real outputs. For example - Original code: Code for the -T42: After deleting rung 2 I was able to change the model to a -B1. I realize it is a bit of a pain in the butt to modify your program this way, but it will work. You do what you can with the tools you have. Joe T.
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You yourself answered the question about the reasons for the failure of ethernet modules. In any case, the user should read about the permissible working conditions before using the equipment in the field. Accordingly, you have a choice - to take one communication module or another. It is another matter to replace the entire controller with the program if it is fundamentally impossible to replace the communication module. Of course, there are no perfect things - there are things that fit and not quite. On the forum there were examples of systems where the PLC was simply installed on a vertical DIN rail. - This is another simple solution to the port pollution problem. I met a PLC hidden in an IP67 cabinet made of stainless steel, which was hidden in another IP67 cabinet made of stainless steel, which was installed in the IP67 body of a machine that packed sausages. To the question of why the controller failed, I answered - it overheated. The plastic on the controller crumbled from the temperature, but the machine worked for some time (about 4 years).
- Yesterday
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V570 bitmaps SDW5 and SDW6
kratmel replied to klijo's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
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Looking at Merle's other posts I think you're right. Not enough initial info, and perhaps should have been started in the Unilogic software area.
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Patrick Bueno joined the community
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I could be wrong, but I got the impression OP was referring to UniLogic.
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jamesvvegita joined the community
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ShubhhSharma joined the community
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shofialisa joined the community
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Cara Bereck Levy started following UniStream MODBUS Transaction Status
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@Joe Tauser Thank you for posting the full table--and thank you again for your orginal alert regarding that bug 🙂 It has indeed been repaired, and will be released with the fix with the next Unilogic version!
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No, it just changes the access credentials to the PLC (the program will continue running). After you change it, then every person that will want to communicate with the PLC through UniLogic, will need to know the password.
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Hi @Cara Bereck Levy, Your attention on that point please. Thanks! Rivka
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Hi, may i know how to access Unilog_tmp file when i upload log. based on the picture above, what happen if we change the password? is that the program will go offline after change the password?
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Aiman Zulhusni joined the community
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I ran into that bug in the Help, too. I was told it will be fixed in the next release, but here's the repaired table: Joe T.
- Last week
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When adding a new modbus operation, i.e., a "Registers Periodic", at the end of the row, there is a "Status" to be add for monitoring individual operation. When link a tag to the status filed to contain the Modbus transaction status, I can get a "-2" to show on my HMI screen. When I look at the Help page, the table for status codes is not shown correctly. Would you please help to show the complete content of this table. Thanks!
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Duct tape is probably the cheapest solution. And in fact, in several modern Siemens 1200 series, I already replaced the ethernet controller chip due to a short circuit that completely blocked the operation of the PLC. I don't know the reasons. I did not encounter any problems with the ethernet controller in the Unitronics PLC.
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Hi, I may have mentioned it wrong. I want the PLC to initiate a data table download. How can I do that. Write now I’m using Ethernet(Call) feature and scheduling to export excel files to the PC every 12hours. But I want PLC to initiate the excel file send to the PC, when the Data table is fully entered. How will I achieve that ? Please give me feedback. Give me an example code if possible.
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Flex727 started following Is it possible to "ignore" UniStream PLC Uni-I/O hardware configuration? and Using Timers
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It doesn't pause anything. The Timer Out bit just doesn't pass power flow until the timer expires.
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Hello, I have a question regarding timers and I seem to be finding conflicting information during my research. If I am using an ON TIMER on a rung of my ladder logic to delay something from happening, does that timer pause the entire program execution, or does it just pause execution on that particular rung? Will the other rungs continue to execute while this timer is waiting to expire? Thanks.
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I would suggest to contact Support. I had an issue once with a new UniStream that gave me "Invalid MAC Address" msg on power-up. Same thing with the CPU being in stop mode. Tech support had to do a remote connection through my laptop to fix the issue. It was quite involved and not something that could have been solved simply by providing instructions to follow.
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Hello, I have an inquiry into support for this but figured I would post here also. I just upgraded a modular Unistream (USP-156-B10) from version 1.24.21 to 1.34.78 and now get an Invalid Serial Number message when controller reboots. The CPU is in stop mode also. I am able to enter Uniapps and toggle to run mode but my customer will not have access to Uniapps. I appreciate any help in advance, Thanks