
B–62073E–1/042. INTERFACE BETWEEN CNC AND PMC–NA OR NB
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2.3.47 Axis interchange signals
Axis interchange signals: AXC4 AXC2, AXC1
[Classification]
Input signals
[Function] Informs the control unit of the axis interchange number.
[Operation] Specifies an axis interchange number according to the table below.
Axis interchange number
0 1 2 3 4 5
AXC1 0 1 0 1 0 1
AXC2 0 0 1 1 0 0
AXC3 0 0 0 0 1 1
NOTE If either parameter 1049 or the signals received from the machine specify axis interchange
number 0, the axes are interchanged according to the other axis interchange number, which
is not zero. If neither axis interchange number is zero, the axes are interchanged according
to the axis interchange number specified by the signals sent from the machine. When the axes
need not be interchanged, the two axis interchange numbers must be set to zero.
2.3.48 Memory protection keys
(a) Memory protection keys (KEY1, KEY2, KEY3, KEY4)
[Classification]
Input signals
[Function] Only when high, permit memory contents to be modified by MDI panel operations. Four sig-
nals are provided according to the memory contents to be modified.
(1) KEY1: Enables the input of tool compensations and workpiece reference point com
pensations.
(2) KEY2: Enables the input of setting data and macro variables and the presetting of ab
solute coordinates.
(3) KEY3: Enables the input and editing of part programs.
(4) KEY4: (Reserved)
[Operation] When a memory protection key signal is low, the corresponding operation is disabled.