HEIDENHAIN TNC 306 Technical Manual User Manual
Page 386
7-96
TNC 416/TNC 406/TNC 306
Commands
3/2000
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.