Siemens CP-8000, Руководство пользователя

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Engineering via SICAM WEB
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual Unrestricted
425
DC8-037-2.02, Edition 10.2017
9.2.1 Creating an Instruction List (IL)
The creation of an instruction list is only possible independently from the target device. For the
programming is an ASCII-Editor (for instance
Microsoft Notepad ® ) required.
Example
The instruction list must be stored as file type .plc .
For loading the program code into the target device please follow the instruction in section
9.2.2.1.1 , Import Application Program .
You find the general specification of the programming language (IL) in the manual SICAM
RTUs Common Functions System and Basic System Elements, chapter "Automation", section
"Restricted Open-/Closed-Loop Control Function", "Application Program", "Instruction List"
.
9.2.1.1 Structure of the Instruction List
The instruction list consists of 3 parts (in the following sequence):
•
Startup (
PLC_RESET
)
The startup part is run through once after a startup. Here all variables can be initialized,
that are required directly
after startup and before the current initial image.
•
Initialization (
PLC_INIT
)
The initialization part is run through once after a startup. Here all variables can be initial-
ized, that are required directly
after the current initial image and before the execution of
the cycle part.
•
Cycle (
PLC_START
)
The cycle part is run through cyclically (CP-8000/CP-802 x provides 1 task). The cycle time
is definable by means of a system variable.
You will find some selected program examples in appendix B , Examples for Instruction Lists
(IL) .