Startup - Siemens SINUMERIK 840D Function Manual

Replacing the technology function "setpoint changeover" (TE5)
The "setpoint changeover" function replaces the technology function "setpoint changeover"
(TE5). Migration of the technology function to the functionality of the "setpoint changeover"
function means that you must make changes in the machine data and in the PLC user program:
● Machine data MD63750 is no longer required.
● The meanings of various NC/PLC interface signals have changed.
● Alarms 70451 and 70452 are no longer applicable.
● A setpoint changeover with simulated axes (MD30130 = 0) is no longer supported.
● The known restrictions relating to the technology card function are no longer applicable.
11.2

Startup

Machine data
Setpoint assignment
The same setpoint channel of a drive is assigned a number of times to define the axes
participating in the setpoint switchover. For this, the following machine data must be pre-
assigned with the same logical drive number for each axis:
MD30110 $MA_CTRLOUT_MODULE_NR (setpoint assignment: module number)
Note
Alarm 26018 is output if the option is missing.
Encoder assignment
The encoder is assigned in the machine data on an axis-for-axis basis:
MD30230 $MA_ENC_INPUT_NR(actual value assignment: Input on drive module/measuring
circuit module)
NC/PLC interface signals
Note
Access rights
Despite assignment of a drive to several machine axes, the use of NC/PLC interface signals
remains unchanged. In the PLC user program this requires an explicit coordination of the
access operations to the NC/PLC interface signal of the individual machine axes involved in the
setpoint switchover.
Request for drive control
The request to assume drive control is realized via:
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
S9: Setpoint switchover
11.2 Startup
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