Detailed description
2.3 Setpoint /actual-value system
Basic logic functions: Velocities, Setpoint/Actual Value Systems, Closed-Loop Control (G2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
37
Actual-value routing
For actual-value routing, the following actual-value assignments for parameterizing the
associated machine data must be made:
Actual-value assignment Number:
Drive type: Of the bus segment
Drive number/module number: Of the module within the bus segment
Input on drive module/measuring circuit module: Of the setpoint input
Type of actual-value acquisition (position actual
value):
The encoder type used
Encoder set independently/dependently The encoder is independent
Actual-value corrections by the NC
Machine data actual-value routing
The following machine data must be parameterized for each actual-value branch:
MD30210 $MA_ENC_SEGMENT_NR[n] (actual-value assignment of bus segment):
The number of the bus segment, via which the encoder is addressed, is entered here.
Depending on the SINUMERIK version, certain bus segments are preassigned.
• Local bus (similar to SINUMERIK FM NC, for example)
= 0
• 611D I/O bus (1st DCM, e.g., SINUMERIK 810D)
= 1
• Local I/O bus
= 2
• 611D I/O bus (2nd DCM)
= 3
• Reserved for virtual buses
= 4
• PROFIBUS-DP (NCU 573.2 and higher)
(PROFIBUS line for ProfiSafe at PLC end)
= 5
• PROFIBUS DP link module (NCU 573.2 and higher)
= 6
MD30220 $MA_ENC_MODULE_NR[n])
(actual-value assignment: drive module number/measuring circuit number):
The number of the module in the bus segment, via which the encoder is addressed, is entered here.
The logical drive number of the axis module can be set via machine data:
MD13010 $MN_DRIVE_LOGIC_NR[n]
for:
• SINUMERIK 810D
Range of values 0 - 15
• SINUMERIK 840D as 611 digital drive number
Range of values 0 -31
• SINUMERIK 840D PROFIBUS on link module
Range of values 0 -125
MD30230 $MA_ENC_INPUT_NR[n])
(actual-value assignment: Input on drive module/measuring circuit module):
The number of the input, to which the position actual-value encoder is connected, is entered here.
• SINUMERIK 840D/810D:
= 1 or 2 (counting down)
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