Programming instructions

NC Programming 17VRS Tool Management Commands
8-3
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
8.2 Tool Storage Motion Commands
All tool storage unit motion is performed asynchronously relative to the
motions on the other NC axes. The NC motion commands only initiate
tool storage unit motion and do not wait until the tool storage unit has
completed the motion. In the meantime, the NC-program—and thus the
process—can be continued.
A command can be used to scan signals to determine whether the motion
which was initiated is finished. In this way, the NC-program is halted and
synchronized with the tool storage unit.
Tool Storage to Reference Position ‘MRF’
The MRF command directs the tool storage axis to return to the reference
position.
MRF
This command is comparable to G74 for the NC axes of a process. After
the controller is powered on, are reference position must be established
for the tool storage system before it can traverse to a particular position.
For this reason, the MRF command must be programmed in the reverse
program of a process which uses the tool storage system. This must be
accomplished in a way which does not depend on the type of axis or type
of storage system.
Before performing the MRF command, it is important to be certain that the
tool storage motion does not prevent other NC axes from referencing.
Tool Storage to Home Position ‘MHP’
The MHP command causes the tool storage system to traverse to its
home position. In this way, the tool management system ensures that the
storage system is traversed to position 1 regardless of the type of axis or
storage unit.
MHP(<Direction[0..2]>)
MHP(1)
MHP(<Variable>)
MHP(@120)
Direction = 0: any given direction
Direction = 1: positive direction
Direction = 2: negative direction
Optionally, the direction of motion can be stated as being in the direction
of the home position. If no direction is stated, the controller follows the
shortest path.
When traversing to the home position, the tool management system
passes position 1 to the SPS if the storage system is SPS-controlled. The
SPS must then traverse to the home position by using position 1 as the
reference point.
The CNC does not wait until the tool storage unit has reached the home
position. It continues to process the NC-program while the tool storage
move is being carried out. If this is not desirable, the MRY command tool
storage ready? can be used to halt execution of the NC-program until the
tool storage motion is completed.
Note:
The home position of the NC-controlled tool axis is declared by
the machine builder in the axis parameters.
Syntax
Syntax