Siemens sinumerik 840D sl Function Manual

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Detailed description2.5 StartupSpecial functions: Clearance Control (TE1)Function Manual, 11/2006, 6FC5397-2BP10-2BA0 212.5.3 Parameter settings for input signals (840D)The following input signals must be parameterized in the machine data:• Clearance sensor input voltage– 1 analog input• "Sensor collision" input signal (optional)– 1 digital inputAnalog inputThe following machine data must be parameterized for the analog input:• MD10300 $MN_FASTIO_ANA_NUM_INPUTS (number of active analog NCK inputs)• MD10362 $MN_HW_ASSIGN_ANA_FASTIN (per analog module) (hardware assignmentfor the fast analog NCK inputs)Specifying the physical address activates the analog input module• MD10384 $MN_HW_CLOCKED_MODULE_MASK (per terminal block) (clock-synchronous external NCK I/O processing)The slot of the analog input module on the terminal block must be set to clock-synchronous operation. To do this, set the machine data bit with the bit number of themodule slot from the analog input module in the terminal block. (Example: Slot 5 →MD10384 = 10Hex )• MD10380 $MN_HW_UPDATE_RATE_FASTIO (per terminal block) (update rate for theclock-synchronous external NCK I/O)Synchronization of the A/D converter to the position controller cycleMD10380 = 2Digital inputThe following machine data must be parameterized for the digital input:• MD10350 $MN_FASTIO_DIG_NUM_INPUTS (number of active digital NCK input bytes)• MD10366 $MN_HW_ASSIGN_DIG_FASTIN (per digital module) (hardware assignmentfor the external digital NCK inputs)Specifying the physical address activates the digital input module.A complete description of the analog and digital inputs appears in:References:/FB2/ Function Manual, Extended Functions, Digital and Analog NCK I/Os (A4)