# Data of an axis-specific technology control unit

Data of a technology function, axis
Description | A technology control unit contains elements for commanding, acknowledging and transferring any required parameters.
Data type | TECHNO_UNIT_AX
ST path | Default synchronisation: gpAx[axis_idx]^.techno_unit_std_sync[tech_unit_idx] Cross-block synchronisation: gpAx[axis_idx]^.techno_unit_late_sync[tech_unit_idx]
Job
ST element | .please_rw
Description | By setting please_rw, the CNC signals to the PLC that the technology control unit is to be executed.
Data type | BOOL
Value range | [TRUE, FALSE]
Special features | Consumption data item
Access | The CNC refreshes the data of the technology function only if this element is FALSE. After updating, the CNC sets this element to TRUE and so element done_w is set to FALSE. The PLC reads the data of the technology function if this element has the value TRUE. After the data is transferred, the PLC sets the value to FALSE.
Function type
ST element | .fkt_ctrl_r
Description | The type of technology function is transferred in fkt_ctrl_r.
Data type | UINT
Wertebereich2 (value range 2) | Value | Constant | Meaning
1 | HLI_INTF_M_FKT | M function
2 | HLI_INTF_H_FKT | H function
3 | HLI_INTF_SPINDEL | S function
Access | PLC reads
Parameter
ST element | .attribut_r.data
Description | Depending on the content of the element fkt_ctrl_r this element contains the parameters of an M function/H function if the technology function type is HLI_INTF_M_FKT or HLI_INTF_H_FKT S function (spindle) if the technology function type is HLI_INTF_SPINDEL
Data type | ARRAY [0.. HLI_TECH_UNIT_AX_MAXIDX] OF BYTE
Access | PLC reads

Acknowledgement
ST element | .done_w
Description | By setting element done_w to TRUE, the PLC signals to the CNC that the technology information was executed.
Data type | BOOL
Value range | [TRUE, FALSE]
Special features | Consumption data item
Access | PLC sets the value to TRUE when the technology function was executed. The CNC sets the value to a FALSE before a new command.