Load Byte (Lb); Load Word (Lw) - HEIDENHAIN iTNC 530 HSCI Technical Manual

9.8.5 LOAD BYTE (LB)

Function
Load inputs I3 to I10 into the
accumulator (bit 0 to bit 7).
Assign accumulator contents to
byte 8.

9.8.6 LOAD WORD (LW)

1766
LB (LOAD BYTE)
Syntax:
M, I, O, T, C
Operands:
Action:
Copy 8 markers, inputs, outputs, timers or counters with ascending
numbering into the word accumulator. Each operand occupies one bit in the
accumulator. The iTNC saves the entered operand address in the accumulator
as LSB, the entered address +1 as LSB +1 etc. The last (8th) operand is now
the MSB! If necessary, the iTNC fills the accumulator with the correct
algebraic sign.
Example:
A pure-binary coded value is read through inputs I3 to I10 and saved in byte B8
in order to process it later.
Initial state:
Input I3 = 1
Input I4 = 1
Input I5 = 1
Input I6 = 0
STL Accumulator
content
7 6 5 4 3 2 1 0 I10 I9
LB I3 0 1 1 0 0 1 1 1 0
= B8 0 1 1 0 0 1 1 1 0
LW (LOAD WORD)
Syntax:
M, I, O, T, C
Operands:
Action:
Copy 16 markers, inputs, outputs, timer or counters with ascending
numbering into the word accumulator. Each operand occupies one bit in the
accumulator. The iTNC saves the entered operand address in the accumulator
as LSB, the entered address +1 as LSB +1 etc. The last (16th) operand is now
the MSB! If necessary, the iTNC fills the accumulator with the correct
algebraic sign.
Example:
See example command LB. Use command LW in the same way as LB.
However, the iTNC processes 16 operands.
Input I7
Input I8
Input I9
Input I10
Operand content
I8 I7
1 1 0
7 6 5 4
1 1 0
HEIDENHAIN Technical Manual iTNC 530 HSCI
= 0
= 1
= 1
= 0
I6 I5 I4 I3
0 1 1 1
3 2 1 0
0 1 1 1