HEIDENHAIN TNC 306 Technical Manual - Manual (Page 324)

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TNC 416/TNC 406/TNC 306 Commands 3/2000
Word execution with the ASSIGN command
Operands: B, W, D
Operation:
ASSIGN in conjunction with the Word-Operands (B, W, D) copies the contents of the Word
Accumulator to the addressed operand. The = command is only used at the end of a gating chain in
order that a gating result is available. The command can be used several times in succession (see
example).
Example:
A Constant (K) and the contents of Byte B5 should be gated with AND and the result assigned to
Byte B8 and Byte B10.
Initial state: Byte B5 = 2A (hex)
Constant 54 = 36 (hex)
Byte B8 = ?
Byte B10 = ?
Line Instruction Accumulator contents Operand contents
Bit 31 . . . 15 7 0 7 0
... x x x x x x x x x x x x x x x x x x
1 L K+54 ... 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0
2 A B5 ... 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 00101010
3 = B8 ... 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 00100010
4 = B10 ... 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 00100010
Line 1: The Constant is loaded into the Word Accumulator.
Line 2: The contents of the Word Accumulator and Byte B5 are gated with AND.
Line 3: The gating result is assigned to Byte B8.
Line 4: The gating result is assigned to Byte B10.