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 may 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 mode can be defined individually for each structure element during 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, otherwise a message with ID 20651 is output. |