IAI America TT-C3 - Manual (Page 72)

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INTELLIGENT ACTUATOR
Chapter 3 X SEL Lanhuage Data
1.
V
alues
and
Symbols
Used
in
SEL
Language
1-4 Flags
Contrary to its common meaning, the term “flag” as used in programming means “memory.” Flags
are used to set or reset data. They correspond to “auxiliary relays” in a sequencer.
Flags are divided into global flags (Nos. 600 to 899) that can be used in all programs, and local
flags (Nos. 900 to 999) that can be used only in each program.
General-purpose flags (global flags) are retained until the controller is powered off.
Dedicated flags (local flags) are cleared when the program is started.
Flag number 600 to 899 Can be used in all programs “Global flags”
Flag number 900 to 999 Used only in each program “Local flags”
Program 1
Turn on flag 600 Wait for flag 600 to turn ON
(Like this, global flags can be
used to exchange signals.)
(Although the number is the same,
these are local flags and can exist only
in their respective programs.)
BTON 600
BTON 900
Program n
WTON 600
BTON 900