This type of connection can be used to store various side information about your project, to store auxiliary variables, or to develop a demo project, as this type of connection can serve as a “virtual PLC”.
Global Memory
Global memory is a type of memory that is stored on the server, which means if you create a variable that belongs to the global memory connection, this variable will be the same on every client that displays HMI.
Example: If one client stores something in global memory, the other client will see it as well—it’s shared.
Local Memory
Local Memory is stored locally in the client’s browser (Inside the browser cache), and only the clients see it. It’s not shared with other clients as it’s stored locally in the browser.
Data Type
Example
Number
Int, Float, Bool, Date,…
String
String
UDT
User-Defined-Datatype
Did you know?
Global and Local memory has an option to be “persistent.” If this option is not checked, then after turning the server off or restarting it, all the values will start with their initialization values. If this option is checked, then the last stored values will persist after restart, and the values will be kept.
Local Memory
As the local memory is stored in the browser cache if you erase the cache of the browser or open your browser as incognito (Without cache) the previously stored value’s in the local memory won’t be present and the variables will be initialized with their initialization values
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
