System Labels - Mitsubishi Electric FX Series Training Manual

Software Structure and Definition of Terms
b Bit range
M: M devices are used as bit system variables.
From/to: PLC type dependant, as defined in the parameters.
b Labels (P)
From/to: PLC type dependant, as defined in the adequate CNF file
b Step flags (S)
From/to: PLC type dependant, as defined in the adequate TYP file
b Display program size
A summary of the used program size is displayed on a separate dialogue box.
b Display used ranges
A summary of the used system variables
ranges is displayed on a separate dialogue box.
3.2.3

System Labels

System Labels, shown in the system variable list in chapter 3.2.2 are used by GX IEC Developer
for internal management of the project. GX IEC Developer allocates system labels for the
following:
b Network Labels
b Event Driven Task (not EVENT = TRUE)
b User Defined Function blocks (one per function block – unless macro code)
b System Timers (These are used by the Task Manager, for interval triggered tasks and local
Timers.)
3 - 10
If the program is not compiled the dialogue shows a "?" charac-
ter instead of the program size. If SFC or SUB programs are not
available for this CPU, the correspondent line will be grayed.
Programming
MITSUBISHI ELECTRIC