System Variables - Siemens SINUMERIK 840D Function Manual

Mc axes and spindles

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Coupling characteristics, which are not explicitly programmed (in part program of synchronous

actions), become effective with their default settings (see right hand column of the table).

Depending on the settings of the keyword CPSETTYPE instead of the default settings

(CPSETTYPE="CP") preset coupling characteristics can become effective (see Section

"Coupling types (Page 543)").

System variables

The current state of a coupling characteristic set with a keyword, can be read and written to with

the relevant system variable.

When writing in the part program, PREPROCESSING STOP is generated.

The names of system variables are normally derived from the relevant keywords and a

corresponding prefix.

Axes and spindles

Function Manual, 06/2019, A5E47437747B AA

Coupling characteristics / meaning

Threshold value of position synchronism "Coarse"

Threshold value of position synchronism "Fine"

Second threshold value for the "Coarse" position

Second threshold value for the "Fine" position syn‐

Threshold value of velocity synchronism "Coarse"

Threshold value of velocity synchronism "Fine"

Response of the following axis to certain stop signals

and stop commands

Response of the following axis to certain NC/PLC

interface signals

Suppression of special coupling-related alarm out‐

Coupling type

M3: Coupled axes

14.5 Generic coupling

Default setting (CPSET‐

0 (for bits 0 to 3, 5)

1 (for bits 4, 6)

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