Synchronisation type (P-EXTV-00005)

P-EXTV-00005

Synchronisation type of external variable

Description

Write/read access is normally performed synchronously with processing. In individual cases, this implicit synchronisation can be suppressed (see Access synchronisation by NC channel). If the variable is a variable structure, all subordinated structure elements inherit the synchronisation type. In addition, the synchronisation type can be individually defined for each structure element in the type definition (P-EXTV-00018).

Parameter

var[i].synchronisation

Data type

BOOLEAN

Data range

TRUE, FALSE

Dimension

----

Default value

TRUE

Remarks

Synchronous accesses always cause the decoder to stop during a read operation until the synchronous read value is available to the decoder. In addition, it is not permitted to read synchronous variables, e.g. with functions such as an enabled Tool radius compensation; the message is output with ID 20651.