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What can cause communication lag on a Magelis HMI?

It is possible that too many actions that write to PLC tags running at a high frequency can slow down communications. For example, if you had several periodic actions running every 0.1 seconds, this will cause unnecssary traffic. If you find that there are some actions that can be slowed down and  can be executed on data change or at a slower interveral, make the change and this will improve the communication performance time.
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