Kikusui PLZ-3WH Series, Operation Manual

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Chapter 4: Operating Procedure
(b) Step, program and sequence
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● ● ●
Step
A “step” is the most basic unit of the sequence operation, and the sequence is executed from the first step. The items
listed in Table 4.5-1 are set for each step. In a normal-speed sequence, the step execution time and pause function can
be set for each step.
● ●
● ●
● Program
A “program” is a basic pattern used to execute the sequence operation. One program is a set of steps, and up to 256
steps can be assigned to up to 16 programs for a normal-speed sequence; for a fast-speed sequence, up to 1024 steps
can be assigned to up to 16 programs. Each program can be executed independently.
● ●
● ● ●
Sequence
A “sequence” administers the program execution. Any program you want to execute should be specified to a single
sequence. The following items are to be specified.
• Program number
• Number of loops (number of specified program iterations)
• Step execution time (step time width)
• Chain sequence (sequence to be executed next)
• End program (end of sequence)
(c) Sequence file
Up to eight sequences can be saved to one file. Moreover, up to one sequence can be saved to the built-in backup
memories. One sequence file is constructed as illustrated below.
Step
Step
Step
⁝
⁝
Step
Step
Step
⁝
⁝
Step
Step
Step
⁝
⁝ ⁝
⁝
Program
Sequence Program
Program
Sequence
Sequence
⁝
⁝
Up to 16 programs Up to 8 programs
Up to 256
or
1024 steps
Sequence file
Fig. 4.5-4