Installation manual

5/10
5
Ladder language,
structured text language
Modicon TSX Micro
automation platform 0
PL7 Micro/Junior/Pro programming software
Programs written in Ladder language consist of a series of rungs which are executed
sequentially by the PLC. Each rung may be:
b Identified by a label.
b Completed by a comment of up to 222 characters.
A rung consists of 7 lines on TSX Micro and 16 lines on Premium, with 11 columns,
allowing a maximum of 10 contacts and one coil per line.
The Ladder language editor offers several tools for constructing rungs in a user-
friendly way:
b A palette of graphic elements for direct access to the various graphic symbols of
the language via the mouse or the keyboard: contacts, Boolean logic, coils, operation
blocks, predefined function blocks…
b A rung can be drawn without having to fill in each element.
b The language objects can be entered and displayed in either symbol or address
format.
b The symbol and address of each object can be displayed simultaneously.
b A rung is constructed simply by selecting the symbol from the graphic palette and
placing it in the correct position in the grid on-screen.
b An automatic link line function optimizes the number of user actions.
The Ladder language editor is used to call up immediately the functions which assist
data entry:
b Access to function libraries.
b Access to the variables editor.
b Cut, copy, paste.
Structured Text language is a sophisticated algorithmic type language which is
particularly suitable for programming complex arithmetic functions, table operations,
message handling, etc.
Structured Text language enables direct transcription of a flowchart analysis and is
organized into statements. Each statement consists of a label (1000 labels max),
comments (256 characters max) and instructions.
There are four methods for controlling statements:
b Conditional action IF.
b Conditional iterative action WHILE (action repeated while a condition is true).
b Conditional iterative action REPEAT (action repeated until a condition is true).
b Repetitive action FOR (action repeated a certain number of times).
The editor enables statements to be entered one after another.
The editor provides help with entering:
b Modifications, insertion, etc.
b Cut, copy, paste.
Objects can be entered and displayed in either symbol or address format.
Different colors are used for the objects, language key words and program
comments to make it easier to read.
Ladder language (LD)
Program structure (section, SR or event-triggered task)
Program editor: Ladder language
Structured Text language (ST)
Program structure (section, SR or event-triggered task)
Program editor: Structured Text language
P
resentation:
p
age 5/5
Functions:
pages 5/12 to 5/15
Characteristics:
pages 5/16 to 5/18
Reference:
pages 5/18 to 5/19
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: [phone] ● www.stevenengineering.com
efesotomasyon - telemecanique inverter