Symbol at top of KinematicsTree
Symbol 
State 
Mobility 

Solved Mech 
M = 0 
The kinematicchain is:  solved  kinematicallydefined chain 

Unsolved Mechs 
M > 0 
The kinematicchain is:  not fully defined  Do not get kinematicdata 
Kinematic SubAssemblies •MotionParts (Rockers, Sliders) •RackPinions Subassembly Symbols: : the kinematicchain solves for the complete machinecycle. : the kinematicchain is solved now, but not for the complete machinecycle. : the kinematicchain is not solved now, at this machineangle. 

Example. KinematicChain with four subassemblies: •Rocker, •GearedRocker •RRR Dyad •RRR Dyad 

Example 1 : A Dyad that never Breaks... The Symbol is : The Dyad is solved for a machinecycle (0360 of the Master Machine Angle). 

Example 2 : A Dyad that Breaks... The Symbol is : The Dyad is solved now, but it does not solve for ALL positions of the machinecycle (0360 of the Master Machine Angle). 

Example 2 :  The Dyad is broken The Symbol is : The Dyad is not solved at this position of the machinecycle (0360 of the Master Machine Angle). 
You can explore the basic elements of kinematicchains. At this level you can see: •Parts •Joints •MotionDimensions •GearPairs •PulleyJoints The symbol, , also shows next to the elements in each subassembly. 

Example 1 : 5Elements in a Dyad A Dyad that never Breaks... The symbol is to show the Dyad is solved for a machinecycle. The symbol is next to each element in the dyad to show they are solved for a machinecycle. 

Example 2 : 5Elements in a Dyad A Dyad that never Breaks... The symbol is to show the dyad does not solve for a period in the machinecycle. The symbol also shows next to the elements in the dyad that do not solve for a period in the machinecycle. 

Example 2 : 5Elements in a Dyad A Dyad that never Breaks... The symbol is to show the joints in the Dyad do not solve at this instant in the machinecycle. The symbol also shows next to the elements in the dyad that do not solve at this instant in the machinecycle. 
This KinematicsTree has three kinematicchains: Four(4) Kinematic Defined Chains, identified by the icon. A Rocker is expanded to show three elements: •PinJoint, Part, MotDim Rocker The RRR Dyads (broken) is expanded to show it is assembled from: •Three(3) PinJoints , two(2) Parts Dyad and Joint Symbols: This symbol is to the left of a Dyad and Joint when it solves for the machinecycle. This symbol is to the left of a Dyad and Joint if a Joint does not solve for period of the machinecycle. This symbol is to the left of a Dyad and Joint if a Joint does not solve at this instant of the machinecycle. 