Modular instructions and non -modal commands play different roles in programming and CNC systems, with significant differences between them.
The following is a detailed comparison of these two instructions:
1. Definition
Model instruction: Also known as the renewal instruction, once this type of instruction is executed in the program section, it will always maintain its role until it is replaced by another instruction in the same group or the entire program is over. In other words, the effectiveness of the modal instruction will span multiple segments, unless it is clearly canceled.
Non -modular instructions: Also known as non -renewal instructions, its role is limited to the segment of it. Once the program segment is over, the role of the instruction will be automatically canceled. If the next program segment needs to be the same instructions, it must be rewritten.
2. Features
Model instruction: Cross multiple program segments until it is canceled. It can be omitted in the subsequent program segment (if required), suitable for instructions that require continuous effects, such as setting coordinate systems, cutting speed, etc.
Non -mode state instructions: Only due to the segment of the part, it must be clearly written in each required program segment. It is suitable for instructions that only need to be executed in a specific program segment, such as temporarily changing the processing path.
3. Example
In CNC programming, take G code as an example:
Model instruction: For example, G01 (straight -line interpolation), once set in the program, unless the G02 (arc interpolation) is replaced by the same group instructions, it will always be effective to guide the machine tool to move along the straight line path.
Non -mode instructions: For example, M06 (automatic knife), it is only effective in the program segment and used to indicate the machine tool execution of knife changing operations. In the next segment, if you need to change the knife again, you must rewrite the M06 instruction.
4. application scenarios
Due to its continuous and effective characteristics, the modal instruction is widely used in scenarios that need to be maintained or set for a long time, such as cutting speed and feed setting in mechanical processing.
Non -mode state instructions are suitable for those operations that are performed only at specific moments or conditions, such as conditional judgment and temporary modification of processing paths.
5. Summary
Modular instructions and non -modal instructions have their own unique effects and application scenarios in programming and CNC systems.
The modal command continuously simplifies programming by continuously validity to improve programming efficiency; instead of non -modular instructions to ensure the flexibility and accuracy of the program through the scope of accurate control instructions.
In practical applications, developers need to choose the appropriate instruction type according to specific needs to write programs.