Do you think that you found a bug in the IoT Edge platform? Submit an issue so that we can continue to improve. If you have more questions, create a Support request for help. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Note The troubleshooting tool can't run connectivity checks if the IoT Edge device is behind a proxy server.
On Linux: sudo iotedge check On Windows: iotedge check. On Linux: sudo iotedge support-bundle --since 6h On Windows: iotedge support-bundle --since 6h. Warning Output from the support-bundle command can contain host, device and module names, information logged by your modules etc.
View the status of the IoT Edge system services: sudo iotedge system status View the logs of the IoT Edge system services: sudo iotedge system logs -- -f Enable debug-level logs to view more detailed logs of the IoT Edge system services: Enable debug-level logs.
Warning If you force remove the edgeHub container while it has an undelivered message backlog and no host storage set up, the undelivered messages will be lost. This environment variable can take the following values: fatal error warning info debug verbose.
Submit and view feedback for This product This page. Create a iotedge. You may experience stability problems on resource constrained devices like the Raspberry Pi, especially when used as a gateway. Symptoms include out of memory exceptions in the IoT Edge hub module, downstream devices failing to connect, or the device failing to send telemetry messages after a few hours.
The IoT Edge hub, which is part of the IoT Edge runtime, is optimized for performance by default and attempts to allocate large chunks of memory. This optimization is not ideal for constrained edge devices and can cause stability problems. There are two ways to set environment variables:. The IoT Edge daemon prints the following message to the logs:. The IoT Edge daemon enforces process identification for all modules connecting to the edgeHub for security reasons.
It verifies that all messages being sent by a module come from the main process ID of the module. If a message is being sent by a module from a different process ID than initially established, it will reject the message with a error message.
As of version 1. For more information, see the 1. If upgrading to 1. After setting modules for an IoT Edge device, the modules are deployed successfully but after a few minutes they disappear from the device and from the device details in the Azure portal. Other modules than the ones defined might also appear on the device. If an automatic deployment targets a device, it takes priority over manually setting the modules for a single device. The Set modules functionality in Azure portal or Create deployment for single device functionality in Visual Studio Code will take effect for a moment.
You see the modules that you defined start on the device. Then the automatic deployment's priority kicks in and overwrites the device's desired properties.
See the following examples:. Note: if the name of the first function declared in the m-file does not match the file name, it will execute when called by the file name, not the name after the function keyword. For example, in the second example above, if we had improperly called the function TestFunction. Issuing the command "TestFunction" would give the error "Undefined function or variable 'testFunction'. This error message arises because of an attempt to assign a vector or matrix into a compartment that it does not fit in.
The dimension of the subscripted elements does not match the dimension of the assignment. For example, you cannot assign the first element in a matrix to be a vector, because there is only room for 1 element:.
The best way to debug this error is to double check that all of your assignments are the sizes you expect them to be, and that your matrices are growing or not as you expect them to.
This will happen if your code is supposed to return a variable but in the function you never assign that variable. For example if the code is:. However if you passed in 0, MyFunction 0 , then the if block would not be entered and the function would finish without a value ever being assign to y. The programmer must account for all possibilities. Often this means assigning default values immediately upon entering the function:. Above we immediately assign a value of 0 to y so that even if a value of x is entered such that the if block never gets entered, y will still have a value.
For instance, if your code is:. If you call myodefunction with no inputs, you will receive an error on the second line, where MATLAB tries to use t and y to define dy. If you call myodefunction with two inputs, it will proceed without error to the ODE45 call. ODE45 will call myodefunction with two inputs, and that call will proceed without error to the ODE45 call.
One of the most common error messages weI see posted about by new users is this one. Some example code that produces this message is:. And get the error using "Inner matrix dimensions must agree.
Most often, you simply need to use. Matrix Operations. For example, if the index is the result of a calculation or is part of a loop, then you might need to adjust the calculation, or the number of loop iterations. Some useful functions to check sizes and number of elements are numel , size , and length.
In the context of an if statement, for example, the if operator is expecting to see a logical expression, that can be evaluated to a single true or false value, to determine whether to continue executing the code inside the if block.
So the following example code produces this error:. Please don't do this! You will find that MATLAB arrays either numeric or cell will let you do the same thing in a much faster, much more readable way. For example, if A1 through A10 contain scalars, use:. Now refer to A i whenever you mean Ai. In case each Ai contains a vector or matrix, each with a different size, you want to use cell arrays, which are intended exactly for this:. And be sure to use the curly braces for the subscript, not parentheses!
See the FAQ entry on cells if this is still unclear to you. Another approach is to use structures with dynamic field names instead of cell arrays. The fields of the structure can be the variable names you want. And you can index into them with dynamic field references.
In this case, you end up with the variable s, a structure, containing fields specified by the names in the strings that are stored in the cells of the cell array. You can assign anything to the field such as a scalar, an array, a string, another structure, a cell array, or whatever you want. In this example we just assigned the integer in the index variable. Now, if you still really want to go against our advice and create variables with dynamically generated names, you need to use the eval function.
So in a loop, you could use:. Notice how much more obfuscated this is. It could be made possibly clearer to split it up into multiple lines:. In addition, this can cause difficult-to-troubleshoot problems in your code, particularly if you try to dynamically create a variable with the same name as a function:.
The fact that a variable named sin existed at runtime is irrelevant; the parsetime "decision" takes precedence. Repeat : don't create variables at runtime using eval unless you have a very good reason , such as someone gives you a MAT file with variables named A, for example. Even in that case, you can avoid eval by using dynamic field names of a structure:. We present three ways of doing this.
The first uses dir to get existing filenames, the second uses sprintf to create filenames that may or may not exist yet, and the third method uses imageDatastore or fileDatastore to get existing filenames. The first method is if you want to process all the files whose name matches a pattern in a directory. You can use the DIR function to return a list of all file names matching the pattern, for example all.
If you want to get all files in that folder PLUS subfolders, you can use two extra stars in the file pattern, like this:. Or you can use the simpler, though not as robust, code inspired by this StackOverflow question :. The uncommented, simplistic code above assumes that all files will be in the current folder. It's recommended to use the more robust first version instead of this version.
The second method is if the files that you want to process are sequentially numbered , like "file1. Also note the three different ways of building the file name for mat files, image files, or text files - you can use your favorite way. Typically you'd use just one of the options, not all of them, so delete the two you don't need. In the above code, matData, imageData, and textData will get overwritten each time. You should save them to an array or cell array if you need to use them outside the loop, otherwise use them immediately inside the loop.
A third, newer method to process a sequence of files is to use the fileDatastore function, introduced in Ra. This function has the advantage of being able to automatically get a list of your file pattern in subfolders, as well as the main folder. If the file has nothing but numbers separated by whitespace, and has a constant number of columns through the entire file, you can just type load myfile.
The first line is the column headers line and says what the fields of the table will be called. The function TEXTREAD is more flexible still and allows you to skip lines at the beginning, ignore certain comment lines, read text as well as numbers, and more. Type help textread for more info. If you are dealing with a more complicated file try XLSREAD, for example when opening a csv file with only partially numerical content.
For example. Just attach any variables that you want to make global to the UserSettings structure. Now, any other function that declares UserSettings as global will have access to all of the member fields of UserSettings.
Other functions that do not have the "global UserSettings" line in them will not be able to see the UserSettings global variable.
It is not global unless the global line is included in the function. If you're using global variables because you want to share variables between functions, look at the section on How can I share data between callback functions in my GUI.
That section of this FAQ lists some alternatives to using global variables. The logical vectors created from logical and relational operations can be used to reference subarrays. Suppose X is an ordinary matrix and L is a matrix of the same size that is the result of some logical operation.
Then X L specifies the elements of X where the elements of L are nonzero. I've discovered to my horror that structs take up an obscene amount of overhead I'm running version 5. I have this stored in a 1 x data structure, and when I issue the whos command, it tells me that the data now takes up 27,, bytes!
Each array has some overhead, like data type, array sizes, etc. In your second implementation index using data. Note that in your data, for each observation, you have 13 arrays with one value.
I don't know how large the matrix header exactly is, but it is a waste putting only a single value in it! I think Cris has hit it exactly. Each one of these matrices adds an additional bytes, for This still comes up a little short of the amount reported, but it is fairly close. It is much more efficient, both for storage and computation, to use a struct of arrays rather than an array of structs.
The debug memory manager cannot catch your code the instant it writes out of bounds tools like Purify can do this but the performance hit they induce is quite painful. What it will catch is that in general, when you write outside of one memory block you end up writing into another, corrupting it or in the case of the debug memory manager hopefully corrupting only a guard band. When you later free the memory, we can tell you that you walked off the end of the block and corrupted the guard band.
In many programming languages, boolean operators like AND and OR will stop evaluating as soon as the result is known. Linear, stall prevention by auto accel. After updating the parameters of communication card, this bit will change to Additional setting for disable. Frequency when switch from PM sensorless observer mode 0. When Pr. Coast to stop: the AC motor drive stops output immediately, and the motor free runs to stop according to the load inertia.
Example: If user defined unit is inWG and the third decimal point, according to the information above, corresponding to inWG is 01Axh x is the set decimal point , and corresponding to the third decimal place is h. Operation Frequency of Motor 1 Max. Operation Frequency of Motor 2 Max.
Operation Frequency of Motor 3 Max. After this function is disabled, the AC motor drive starts to accel. Fr eq ue ncy S etti ng A ccel. When this function is enabled, OFF is for auto mode auto accel. The motor will be in free run. This will ensure that dEb also occurs to Slave, then Master and Slave will stop simultaneously.
Frequenc y Frequenc y c ommand In cr e a se b y 0. When the actual speed is lower than this setting, the corresponding multi-function output terminal which is set to 43 will be ON, as shown below: a ctua l mo tor sp ee d It is recommended NOT to use less than 1V to set the operation frequency.
If the ACI input is swing between 2 mA and 2. Settings 0. Factory setting is the power value of drive. The drive will keep running after manually reset. Ove r-t orque det ect ion leve l Out put current It works based on the I2t characteristic curve of electronic thermal relay, output frequency and current of drive, and operation time to prevent motor from overheating.
Example: When Pr. If it happens again, it will overwrite the previous record. During this period, OPHL detection will not be conducted. If overload situation is not frequent and only cares the carrier frequency operated with the rated current for a long time, and can accept the change of carrier wave due to short overload, it is recommended to set to 0.
User can select one of voltage type analog input below: a Pr. The 5 error: ocd occurs after another minutes. The 6 error: ocn occurs after another minutes. Then Pr. ARM may make changes to this document at any time and without notice. If any of the provisions contained in these terms conflict with any of the provisions of any signed written agreement covering this document with ARM, then the signed written agreement prevails over and supersedes the conflicting provisions of these terms.
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