SYSTEM / Control System Work Mode Control The work mode consists of two modes, digging and attachment. The mode can be selected by using the monitor unit. Digging Mode: Normal control is performed. Attachment Mode: Functions only when a front attachment in the op- tional kit is operated. Flow rate of the pump increases or decreases in proportion to control pressure of the auxiliary valve (refer to T2-2-34). The pump flow rate control settings are made by using the monitor unit and Dr. ZX. T2-2-55