WEG PLC300 User Manual - page 28
Manual is about: Logic
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76
Description of the Keys
5-2 | PLC300
Three functions can be accessed by means of this key: when pressed normally, it enters
the status of the I/Os (Status PLC300); when pressed for t>3s, it enters the PLC300 setup;
when pressed after the
you can see the firmware version.
When pressed once, it enables the second function of the keys, the LED keeps on until
any key is pressed. If pressed twice in a row, it locks the second function of the keys, in
this case, the LED keeps flashing until the
second function.