Machine mode of operation | Switch-on / Switch-off
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HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
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4.2 Switch-on / Switch-off
Switch-on
DANGER
Caution: Danger for the operator!
Machines and machine components always present mechanical
hazards. Electric, magnetic or electromagnetic fields are
particularly hazardous for persons with cardiac pacemakers or
implants. The hazard starts when the machine is powered up!
Read and follow the machine manual
Read and follow the safety precautions and safety symbols
Use the safety devices
The control displays the startup status. When the system has
completed all tests and initializations, it switches to Machine mode
of operation. The tool display shows the tool that was last used. If
errors are encountered during system start, the control displays the
error symbol on the screen. You can check these error messages
as soon as the system is ready.
Further information: "Error messages", Page 71
After system start, the control assumes that the tool
which was last used is still inserted in the tool holder. If
this is not the case, you must inform the control of the
tool change.
Monitoring EnDat encoders
If EnDat encoders are used, the control saves the axis positions
during switch-off of the machine. During switch-on, the control
compares for each axis the position during switch-on with the
position saved during switch-off.
If there is a difference, one of the following messages appears:
S-RAM error: Saved position of the axis is invalid: This
message is correct if the control has been switched on for
the first time, or if the encoder or other control components
involved were exchanged
Axis was moved after power-off. Position difference: xx mm
or degrees: Check and confirm the current position if the axis
was actually moved
HW parameters changed: Saved position of the axis is
invalid: This message is correct if configuration parameters
were changed
The cause for one of the above listed messages can also be a
defect in the encoder or control. Please contact your machine
supplier if the problem recurs.
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