Systems and methods for selective enablement of hydraulic operation

A hydraulic system comprising:

• a pump including an pump outlet;
• a tank conduit in fluid communication with a tank;
• a hydraulic function including a function workport;
• a function control valve configured to selectively provide fluid communication between the function workport and either the pump or the tank conduit;
• a function poppet valve arranged between the function workport and the function control valve and including a function poppet vent passage;
• a system control valve arranged downstream of the function control valve;
• and
• a pump poppet valve including a pump poppet vent passage, wherein the system control valve is biased into a first position where fluid communication between the function poppet vent passage and the tank conduit is prevented and fluid communication between the pump poppet vent passage and the tank conduit is provided, and wherein the system control valve is selectively movable to a second position where fluid communication between the function poppet vent passage and the tank conduit is allowed and fluid communication between the pump poppet vent passage and the tank conduit is prevented;
• wherein when the system control valve is in the first position, operation of the hydraulic function via manipulation of the function control valve is prevented.