MLD-S Tech-FB Library Description - Bosch Rexroth

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Rexroth MLD-S Tech-FB Library MLD-S Technology Library 1-45 • The function blocks MX_ContinuousAdjustType01, MX_ContinuousAdjustType02 and MX_IncrementalAdjustType01 have different behaiors when the adjustment velocity changes.With MX_ContinuousAdjustType01 and MX_ContinuousAdjustType02 the alteration is immediately active. But with MX_IncrementalAdjustType01, the movement is finished before the new incremental velocity is used. A following adjustment procedure executes the altered factors. The following rules apply for function MX_IncrementalAdjustType01: • The inputs „Inc“ and „Dec“ are edge triggered. A rising edge triggers an adjustment by the specified increment („StepWidth“). • A new adjustment triggered with a rising edge during a movement of the same direction, will trigger a new adjustment once the current move completes. Fig. 1-59: Comparison of the behavior of Continuous and IncrementalAdjustment Independent of the inputs, the Function blocks MX_ContinuousAdjustType01, MX_ContinuousAdjustType02 and MB_Incremental-Adjust initialize the variables that determine the cycle time at the first activation („Enable“ = true). In the second cycle, the function block calculates the correct cycle time to calculate the correct adjustment velocity. Subsequently the cycle time is continuously updated. By specifying a modulo value, the function block supplies an output factor between zero and the specified modulo value. When the modulo value is exceeded, only the output factor is set to zero but the adjustment procedure continues. The valid range is between zero and the modulo value. Specify the range so that it can be adjusted around zero. Additionally the function block MX_ContinuousAdjustType01 and MX_ContinuousAdjustType02 offers the possibility to modify the alteration velocity, time-dependently, by specifying weighting factors and time intervals. DOK-MLD-S*-TechFB*****-AW01-EN-D
1-46 MLD-S Technology Library Rexroth MLD-S Tech-FB Library MX_ContinuousAdjustType01 Short Description Interface Description Fig. 1-60: Possible assignment of a valid range with a modulo value of 360° The function allows the continuous adjustment of an influenced REAL- Variable via binary inputs. Fig. 1-61: FB MX_ContiniuousAdjustType01 Name Type Comment VAR_INPUT Enable BOOL Enable the function block (cyclical, state-triggered) Inc BOOL Increment the influenced variable Dec BOOL Decrement the influenced variable Preset BOOL Set the Preset-Value (PresetValue) PresetValue REAL Specified value for Preset ModuloValue REAL Modulo value (if 0, then absolute processing) HighLimit REAL Maximum output value of the influenced variable LowLimit REAL Minimum output value of the influenced variable StepWidth REAL Increments StepsPerSecond REAL Number of increments per second AdjTimeIntervals ARRAY [1..4] OF REAL Time intervals (in seconds) for weighting of the alteration velocity AdjWeightFactors ARRAY [1..5] OF REAL Weighting factors of the alteration velocity DOK-MLD-S*-TechFB*****-AW01-EN-D
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MLD-S Tech-FB Library Description - Bosch Rexroth

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