DIN Program Structure
A program consists of a program number, a number of blocks, and the end of program. Beginning of program and end of program represent the minimum contents of a program. A program may contain any number of blocks. The only limitation to the program size is the total memory size available. In addition to the (optional) block number, a block consists of a statement. A statement contains the elements:
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preparatory function G
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auxiliary function M, S, T
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high-speed outputs Q
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parameter assignments
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arithmetic instruction
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comment
Points to remember:
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Each element (G or M code) must be programmed only once in a block. High-speed outputs and parameter assignment are an exception.
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A block must have max. 256 characters. A block may also contain comments.
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Within a program, block numbers must be assigned in ascending order.
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A comment must be at the end of the block or stands on its own in a block and is delimited by parenthesis or, in case of arithmetic instructions, by braces.