
B–62073E–1/04 2. INTERFACE BETWEEN CNC AND PMC–NA OR NB
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(c) Feedrate specification signals FDxX15 to FDxX0
[Classification]
Input signals
[Function]
(1) When a cutting feed command (CDxX7 to CDxX0: 01H or 02H) is sent from the PMC, the feedrate
along an axis is specified by a binary code.
(i) Specifying the cutting feedrate in mm/min. (CDxX7 to CDxX0: 01H)
Data range : 1 to 32767
Data unit :
Setting unit
IS–A IS–B Unit
mm unit input
inch unit input
10.0
1.0
1.0
0.1
mm/min., deg/min.
inch/min.
NOTE 1 Cutting feedrate clamp is disabled.
NOTE 2 A feedrate in a command exceeding the rapid traverse rate is clamped at the rapid traverse
rate.
NOTE 3 When 0 is specified, a tool is not moved along the axis.
(ii) Specifying the cutting feedrate in s/block (CDxX7 to CDxX0: 02H)
Data range : 1 to 32767
Data unit : 0.1 s
NOTE 1 Specify the time it takes to complete the block.
NOTE 2 Linear interpolation can be performed by setting the same value for each axis during
simultaneous start mode.
NOTE 3 When 0 is specified, the cutting feedrate is the rapid traverse rate. Override is disabled but the
operation stops when an override of 0 is specified.
(2) Simultaneous start axis specification signals (CDxX7 to CDxX0: 0AH)
These signals are used to start moving a tool simultaneously along several axes controlled by the
PMC.
For these signals, when a block which enables the simultaneous start mode (CDxX7 to CDxX0: 0AH)
is specified, set 1 in the bits corresponding to the controlled axis numbers of the axes along which mov-
ing a tool is simultaneously started
FDxX9 : Controlled axis 10 , FDxX4 : Controlled axis 5
FDxX8 : Controlled axis 9 , FDxX3 : Controlled axis 4
FDxX7 : Controlled axis 8 , FDxX2 : Controlled axis 3
FDxX6 : Controlled axis 7 , FDxX1 : Controlled axis 2
FDxX5 : Controlled axis 6 , FDxX0 : Controlled axis 1
When a block which enables the simultaneous start mode is executed, execution starts after all subse-
quent command blocks for the axes along which moving a tool is simultaneously started are set in the
buffers for pending commands. The simultaneous start mode is effective until a block which disables
the simultaneous start mode (CDxX7 to CDxX0: 0BH) is executed.
The simultaneous start mode can be enabled or disabled in a control command for any axis. If a block
which enables the simultaneous start mode is specified in the simultaneous start mode, the block be-
comes invalid.