
17.PMC CONTROL FUNCTION B-63943EN-1/02
- 1940 -
(4) External pulse synchronization - 2nd manual handle (EC0g to
EC6g : 0Eh)
(5) External pulse synchronization - 3rd manual handle (EC0g to
EC6g : 0Fh)
(6) Speed command(EC0g to EC6g : 10h)
(7) Torque control (EC0g to EC6g : 11h)
When an immediate command is prepared and the axis control
command read signal EBUFg is reversed during execution of the same
type of command, the command being executed is terminated, and the
next command is executed immediately.
Suppose, for example, that when continuous feed is being executed at
100 mm/min, another continuous feed command with only the
feedrate changed to 300 mm/min is specified and the axis control
command read signal EBUFg is reversed. The feedrate changes to 300
mm/min.
To end an immediate command, input the reset signal ECLRg.
When specifying a command other than the immediate commands, set
the reset signal ECLRg to 1 and check that the command is terminated,
then reverse EBUFg.
(If both of the block being executed and a block being prepared are
immediate commands, but the types of commands differ from each
other, set the reset signal ECLRg to 1 once.)
- Superimposition
To an axis under PMC axis control, an NC program can issue a move
command. On the contrary, to an axis under operation by an NC
program, a command based on PMC axis control can be issued.
By setting the bit of the axis control superimposed command signal
(which is an axis-type signal) EASIPx (described later) corresponding
to an axis, the axis is placed in the superimposition mode. In this mode,
a CNC command can be superimposed on a PMC axis control
command, and vice versa.
To enable superimposition, the following condition is required:
CNC axis: Cutting feed command (incremental programming
only)
PMC axis: Cutting feed command
When the condition above is not satisfied, the alarm (PS0130) is
issued.
Commands that can be executed successively in the
superimposition mode
If a command indicated below is specified when the NC program is
being executed, the NC program is executed without waiting for the
termination of the PMC axis control command.
- Block specifying no movement (auxiliary function, dwell,
sequence number, EOB, and so forth)
- Cutting feed block
- Rapid traverse block not including an axis on which a movement
is being made under PMC axis control