To move the filter wheel to a given position, use the CUS script PACS_fltw_move.

Calling sequence:

'''PACS_fltw_move(subsystem, filter_pos)'''

Arguments:

''subsystem:'' '''SPEC''' or '''PHOT'''

''filter_pos:'' '''A''' or '''B'''

Example: '''PACS_fltw_move(SPEC,B)''' will place the spectro filter at position B.