Basic Instructions
2-4
2.1.2 Basic Function Instructions
These are the timer, counter and shift register instructions.
To specify set values, the instructions are composed of several steps.
Example:
Example of setting 3.0 seconds in the 0.1 second timer (timer 5)
X0
Y30
T5
Set value
Timer 5 (0.1 s units timer)
TMX 5 K30
Constant of
timer 5
Timing begins when X0 turns on, and T5 turns on when 3.0
seconds elapses.
2.1.3 Control Instructions
These instructions determine the order and flow of program execution.
It is possible to change the sections to be executed, or to execute only the necessary
segments, depending on the conditions.
Specify the section which will execute. This is composed of several steps.
Master control relay
A certain part of the program (specified with MC or MCE) is only executed when the
appropriate condition is met.
Jump
Skips execution of part of the program (specified with JP or LBL) when the appropriate
condition is met. This shortens program execution time.
Step ladder control
Part of the program (specified with SSTP or STPE) is treated as an independent
“process”, and sequential and branch execution is carried out.
Subroutine program
A program which is repeatedly executed for a particular operation is called as a
subroutine (specified with SUB or RET) and executed when needed.
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