Channel-specific connection
The following channel-specific control unit is used to default wear values by the PLC in the modes – ‘Radius wear ‘ (RADIUS) or ‘Tool direction wear’ (TOOL_DIR).
The mode must be either DISC or AUTO in both modes.
Online tool compensation (OTC) | |
Description | The tool radius is compensated by specifying a wear value. The wear value is specified as an offset from the planned cutting edge. It is only possible to used the control unit in the RADIUS or TOOL_DIR modes and in the DISC or AUTO mode. See NC command #OTC. See also functional description [FCT-C20]. |
Data type | MC_CONTROL_SGN32_UNIT, see description of Control Unit |
Special features | If the wear value changes, this change is distributed over several interpolation cycles to avoid sudden changes. |
Access | PLC reads request_r + state_r and writes command_w + enable_w |
ST Path | gpCh[channel_idx]^.bahn_mc_control.otc_radius_offset |
Commanded, requested and return values | |
ST Element | .command_w .request_r .state_r |
Data type | DINT |
Unit | 0.1 µm |
Value range | |
Redirection | |
ST Element | .enable_w |
Adding wear in tool direction
In the third axis (axis_idx = 2) an offset value can be written in the tool direction. The PLC input of the first two axes is ignored.
All the axes in the following sequence can be influenced as usual by the PLC.