 |
| Place of Origin: | Japan |
| Brand Name: | Tamagawa |
| Certification: | CE |
| Model Number: | TS5208N23 |
| Minimum Order Quantity: | 1pcs |
|---|---|
| Packaging Details: | carton |
| Delivery Time: | in stock |
| Payment Terms: | T/T, Western Union, MoneyGram |
| Supply Ability: | 100pcs/week |
| TAMAGAWA: | TAMAGAWA | TS5208N23: | TS5208N23 |
|---|---|---|---|
| Material: | Iron | Color: | Black |
| Japan: | Japan | Wire: | Wire |
| Temperature: | 20-80 | Dimension: | 40mm |
| PROFINET Distributed I/O instructions , and PROFIBUS Distributed I/O Instructions (Page 274) transfer buffers of data that could be interrupted |
affecting the interrupt latency (time from an event to the time when the interrupt OB is executed) of your user program. STEP 7 provides the following standard programming languages for : |
| Ensure the data consistency for the buffers of data by avoiding any read or write operation to the buffers in both the program cycle OB and an interrupt OB. |
LAD (ladder logic) is a graphical programming language. The representation is based on circuit diagrams (Page 155 |
| If it is necessary to modify the buffer values for these instructions in an interrupt OB, use a DIS_AIRT instruction to delay any interruption (an interrupt OB or a communication interrupt from an HMI or another CPU) until an EN_AIRT instruction is executed. |
The use of the DIS_AIRT instruction delays the processing of interrupt OBs until the EN_AIRT instruction is executed, |
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FBD (Function Block Diagram) is a programming language that is based on the graphical
logic symbols used in Boolean algebra (Page 156).
● SCL (structured control language) is a text-based, high-level programming language
(Page 156).
When you create a code block, you select the programming language to be used by that
block.
Your user program can utilize code blocks created in any or all of the programming
languages.
Programming concepts
6.5 Programming language
Programmable controller
System Manual, 04/2012, A5E02486680-06 155
6.5.1 LadTo create the logic for complex operations, you can insert branches to create the logic for
parallel circuits. Parallel branches are opened downwards or are connected directly to the
power rail. You terminate the branches upwards.
LAD provides "box" instructions for a variety of functions, such as math, timer, counter, and
move.
STEP 7 does not limit the number of instructions (rows and columns) in a LAD network.
Note
Every LAD network must terminate with a coil or a box instruction. Consider the following rules when creating a LAD network:
● You cannot create a branch that could result in a power flow in the reverse directionYou cannot create a branch that would cause a short circuiStructured Control Language (SCL) is a high-level, PASCAL-based programming language
for the SIMATIC S7 CPUs. SCL supports the block structure of STEP 7 (Page 148). You can
also include program blocks written in SCL with program blocks written in LAD and FBD.
SCL instructions use standard programming operators, such as for assignment (:=),
mathematical functions (+ for addition, - for subtraction, * for multiplication, and / for division).
SCL also uses standard PASCAL program control operations, such as IF-THEN-ELSE,
CASE, REPEAT-UNTIL, GOTO and RETURN. You can use any PASCAL reference for
syntactical elements of the SCL programming language. Many of the other instructions for
SCL, such as timers and counters, match the LAD and FBD instructions. For more
information about specific instructions, refer to the specific instructions in the chapters for
Basic instructions (Page 175) and Extended instructions (Page 247).
You can designate any type of block (OB, FB, or FC) to use the SCL programming language
at the time you create the block. STEP 7 provides an SCL program editor that includes the
following elements:
● Interface section for defining the parameters of the code block
● Code section for the program code
● Instruction tree that contains the SCL instructions supported by the CPU
You enter the SCL code for your instruction directly in the code section. For more complex
instructions, simply drag the SCL instructions from the instruction tree and drop them into
your program. You can also use any text editor to create an SCL program and then import
that file into STEP 7. In the section of the SCL code block you can declare the following types of parameters:
