IAI ssel, Operation Manual

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Part 2 Programs
Part 2 Programs
Chapter 1 SEL Language Data
1. Values and Symbols Used in SEL Language
1.1 List of Values and Symbols Used
The various functions required in a program are represented by values and symbols.
Function Global range Local range Remarks
Input port 000 ~ 024
Varies depending on
the function.
Output port 300 ~ 307
Varies depending on
the function.
Flag 600 ~ 899 (300) 900 ~ 999 (100)
Variable (integer)
200 ~ 299 (100)
1200 ~ 1299 (100)
1 ~ 99 (99)
1001 ~ 1099 (99)
99 is used for IN, INB,
OUT, OUTB, etc.
Variable (real)
300 ~ 399 (100)
1300 ~ 1399 (100)
100 ~ 199 (100)
1100 ~ 1199 (100)
199 is used for PPUT,
PGET, PARG, etc.
String 300 ~ 999 (700) 1 ~ 299 (299)
Tag number 1 ~ 256 (256)
Subroutine number 1 ~ 99 (99)
Zone number 1 ~ 4 (4)
Pallet number 1 ~ 10 (10)
Axis number 1 ~ 2 (2)
Varies depending on
the function.
Axis pattern 0 ~ 11
Controller with
increased memory size
1 ~ 20000 (20000)
Position number
Controller without
increased memory size
1 ~ 1500 (1500)
Controller with
increased memory size
1 ~ 128 (128)
Program number
Controller without
increased memory size
1 ~ 64 (64)
Controller with
increased memory size
1 ~ 9999 (9999)
Step number
Controller without
increased memory size
1 ~ 2000 (2000)
Task level NORMAL/HIGH (2)
SIO channel number 1 (0)
Wait timer 1
1-shot pulse timer
16 (Number of timers
that can be operated
simultaneously)
Ladder timer Local flag (100)
Virtual input port (SEL system

SEL user program)
7000 ~ 7299 (300)
Virtual output port (SEL user
program

SEL system)
7300 ~ 7599 (300)
Number of symbol definitions 500
Controller with
increased memory size
5000 (including literal)
Number of times symbol can be
used in commands
Controller without
increased memory size
2500 (including literal)
Used in common from any program.
Referenced separately
in each program.
Cleared when the
program is started.
Caution

Variables 99 and 199 are special variables this system uses in operations.
Avoid using these two variables for general purposes.

The values in the table represent ranges that can be processed by
software. Items that require physical devices, such as I/O ports and
functions relating to axis number and SIO, will be determined by possible
combinations and models of commercial boards, etc., available for each
device application.