Detailed Description
2.3 Setpoint/actual-value system
Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control (G2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-25
MD30240 $MA_ENC_TYPE[n] (actual-value acquisition type)
to "0".
As soon as the standard machine data have been loaded, the axes become simulation axes.
The setpoint and actual value can be set to the reference point value with reference point
approach.
Machine data:
MD30350 $MA_SIMU_AX_VDI_OUTPUT (axis signal output on simulation axes)
can be used to define if the axis-specific interface signals are output to the PLC during the
simulation.
Actual-value correction
If actual-value corrections performed by the NC on the encoder selected for position control
are not to influence the actual value of any other encoder defined in the same axis, then the
position control encoder must be declared to be "independent" via machine data:
MD30242 $MA_ENC_IS_INDEPENDENT.
Actual-value corrections include the following:
• Modulo treatment
• Reference point approach
• Measuring system comparison
• PRESET
2.3.2 Speed setpoint and actual-value routing
General
In order to carry out speed setpoint and actual-value routing, the following must be defined
for each axis/spindle:
• Assignment of 1st measuring circuit
• Assignment of 2nd measuring circuit (if present)
• Assignment of setpoint branch
Multiple assignment is also possible, e.g. using a measuring circuit for position actual-value
acquisition for the alternating control of several axes/spindles.
Note
When a SIMODRIVE 611 universal is operated via the PROFIBUS DP, various machine
data that need to be parameterized for digital and analog drives are not assigned.
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