Fanuc 15M CNC Ladder (PMC) Scan Question

[Chip Maker]

Hello all,

Does anyone know how the PMC ladder logic on Fanuc 15M CNC's solve? Is it:

1. top to bottom, left to right or...
2. left to right, top to bottom?

I cannot locate this information in any Fanuc PMC manual nor find any reference to it online.

Thanking you in advance!

 

[Steve Bailey]

As far as I know, it treats each individual rung as an expression and solves the expression as an entity.