# Control Unit

Parameterising handwheel mode in manual mode
Description | Control unit to manage data for parameterising handwheel mode in manual mode, including flow control of user data.
Data type | MC_CONTROL_HB_HR_PARAM_UNIT, dee description Control Unit with usage check
Special features | The manual mode parameter can be written at any time and it is stored internally in a table under the index 0. This value is only becomes effective in the corresponding operation mode when the axis is activated.
ST path | gpCh[channel_idx]^.hb_mc_control.hr_parameter
Access | PLC reads request_r and writes command_w + enable_w
Commanded, requested data
ST element | .command_w .request_r
Data type | MC_CONTROL_HB_HR_PARAM_UNIT, for description see the section on User Data
Flow control commanded data
ST element | .command_semaphor_rw
Data type | BOOL
Special features | Consumption data item
Access | CNC accepts the commanded data if this element has the value TRUE and sets this element to the value FALSE after complete acceptance of the data. PLC can write data for commanding if this element has the value FALSE. The PLC sets this element to the value TRUE if all data to be commanded is written.
Flow control of requested data
ST element | .request_semaphor_rw
Data type | BOOL
Special features | Consumption data item
Access | CNC writes the data requested by the GUI if this element is FALSE and then sets this element to TRUE. PLC reads the data requested by the GUI if this value is TRUE. After the PLC fully accepts the data, the PLC sets this element to FALSE.
Redirection
ST element | .enable_w