From GridLAB-D Wiki
deltamode_updateorder - Global variable indicating the order in which modules are updated in subsecond simulations New in 2.3!
Synopsis
#print ${deltamode_updateorder}
Remarks
The deltamode_updateorder global variable indicates the order which modules receive subsecond update requests from the main solver.
Caveats
The order in which modules receive the update is determined by the order in which modules are loaded by the GLM file. Changing this variable will not affect the simulation update order.
The value of the deltamode_updateorder global variable is not set until the simulation initialization process has completed. As a result, it cannot be used while the GLM file is being loaded.