Siemens SINUMERIK 840C - Manual (Page 836)

06.93 12 Functional Descriptions
12.7.2 Description of the spindle modes
Possible configurations for the C axis mode
The machine data listed below must be entered for configuring the interfaces and for format
interfacing between actual value, internal computing resolution and setpoint A more detailed
description of this machine data will be found in Section 4 and the Installation Instructions.
• Machine data for configuring the spindle interface
MD 400* Spindle assignment, actual value input and servo CPU
MD 455* Pulses, variable incremental weighting
MD 456* Distance traversed, variable incremental weighting
MD 458* Pulse multiplication for HMS
MD 460* Spindle assignment, setpoint output
MD 462* Cutoff frequency of spindle encoder
MD 520* Configuration bits
MD 521* Configuration bits
• Machine data for configuring the C axis interface
MD 200* Axis assignment, actual value input and servo CPU
MD 308* Cutoff frequency of C axis encoder
MD 364* Pulses, variable incremental weighting
MD 368* Distance traversed, variable incremental weighting
MD 384* C axis assignment, setpoint output
MD 564* Configuration bits (bit 5: axis is rotary axis)
MD 1116* Pulse multiplication for HMS
The following diagrams give an overview of the possible input/output assignments for the C
axis mode. When configuring with two encoders and two drives, the C axis must be declared
an independent axis.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 12–61
SINUMERIK 840C (IA)