Method for setting weft-insertion conditions in multi-color weft insertion loom

A setting method is used in a multi-color weft insertion loom including a weft insertion device (11) which includes two or more weft insertion systems that operate in a weft insertion operation, a setting device (46) which sets operation control values of weft-insertion-related devices belonging to the respective weft insertion systems, and a weft-insertion control unit (43) in which the control values are set in advance as weft insertion conditions in association with selection numbers assigned to the respective weft insertion systems. The setting device (46) performs the steps of reading control values for setting targets from control values included in weft insertion conditions stored in a storage device and corresponding to a selected selection number; and setting, in response to a generation of a setting command signal, the control values read in the reading step in the weft-insertion control unit (43) as control values for the setting targets in a weft insertion system corresponding to a designated selection number.