What fault occurs if the Assertion Level switch position does not match parameter P120?

An F.AL fault will occur if the Assertion Level switch (ALsw) position does not match the P120 setting and P100 or any of the digital inputs (P121–P124) is set to a value other than 0. The assertion level switch and P120 must both match the desired assertion level for proper operation. If using dry contacts or PNP solid state switches, set both to High (+); for NPN devices, set both to Low (−). (Page 21)