tests/ethercat/wago_higen/ethercat@etherlab/master@EthercatNode/process_variables.xml
Removed useless condition in Worker.py that was allowing misfit non-serialized call when worker still not running its loop.
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<ProcessVariables xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>