Справочник Пользователя для Mitsubishi Electronics 700 Series

Note the following when nesting the instructions.

(1) The instructions can be nested to a level of eight (N0 to 7). When nesting them,

use MC from lower to higher nesting (N) numbers and MCR from higher to lower

numbers. In the opposite order, the PLC function cannot perform normal

operation since the instructions cannot be nested.

(2) When the MCR instructions are gathered in one place in the nesting structure, all

master controls can be terminated by one lowest nesting (N) number.

Since buses cross each other, normal 
master control ladder cannot be created.

A

B

Display in ladder mode

Nesting numbers of MCR are 
opposite.

Actual operation ladder