IAI America DS-S-C1 - Manual (Page 12)

10
3. Flags
The function of flags is to set and reset data within "Memory." This is analogous to "internal relays" or "coils" in a PLC.
In general, there are two (2) types of flags: Global flags 600 ~ 887 which can be used in all programs and local flags 900 ~ 999 which
can be used only in individual programs.
Global flags are saved when the power is turned OFF (battery backup). Local flags are erased when the power is turned OFF.
Program 1 Program n
WTON 600
Communicates signals
by using global flags
which are visible in all
programs.
Turn Flag 600 ON
Waiting for Flag 600 to turn ON
Even though these are the same
command, these local flags exist
individually in each program.
BTON 900 BTON 900
BTON 600
3. Flags
r e b m u N g a l F 7 8 8 ~ 0 0 6 s m a r g o r p ll a n i d e s u e b n a C : g a l f l a b o l G
r e b m u N g a l F 9 9 9 ~ 0 0 9 m a r g o r p l a u d i v i d n i n a n i h t i w y l n o d e s u e b n a C : g a l f l a c o L