Festo SPC-AIF-INC Instructions D'utilisation page 17

Do not lay any axis interface cables, CP cables,
measuring system cables or proportional directional
control valve cables near or parallel to cables with high
interference levels.
Use only original cables. Attach the plug with the help
of the union nut, so as to avoid any unintentional
slackening caused by oscillation etc.
Seal any unused connectors with the protective caps
provided. Only then is the IP65 type of protection en
sured.
Festo SPC−AIF−INC 0406NH English 17