HEIDENHAIN TNC 335 Technical Manual - Manual (Page 476)

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TNC 360 3 Commands 7-97
Byte information in brackets:
A shorter command is employed in certain high-priority program sequences.
Operands: jump address (LBL)
Operation:
A CMF command is a conditional Call Module. If the Logic Accumulator is "0", the Module with the
specified jump address (Label) is processed. If the Logic Accumulator is "1", the main program
continues without a Call Module. This command interrupts a logic sequence.
Example for the commands CM, CMT, CMF
A certain Module is to be called, depending on Input I5.
Initial state: Input I5 = 0
Line Instruction Accumulator Content Operand Content
Bit 31 . . . 7 0
... x x x x x x X x x x x x x x
1 L I5 ... x x x x x x 0 x x x x x x x 0
2 CMF 10 ... x x x x x x 0 x x x x x x x
3 L M100 ... x x x x x x 1 x x x x x x x 1
•
•
•
499 EM
500 LBL 10
501 L I3 ... x x x x x x 0 x x x x x x x 0
502 OM 500 ... x x x x x x 1 x x x x x x x 1
503 = O20 ... x x x x x x 1 x x x x x x x 1
504 EM
Line 1: Load the operand contents in the Accumulator.
Line 2: Dependent on Input I5, the Call Module is processed.
Line 499: End Module of the main program.
Line 500: Start of the Module, identified by LBL.
Line 501: Instruction in the subprogram.
Line 502: Instruction in the subprogram.
Line 503: Instruction in the subprogram.
Line 504: End Module: Effects the return to the main program.
Line 3: The main program continues at this point once the Module is processed.