Sinumerik Alarm 14764 NCU link cannot transfer all link variables immediately
Informational alarm for NC program developer. A value assignment to a link variable (e.g. $a_dld=19) is performed in the main run and transferred via NCU link to all NCUs in the link network. The bandwidth of this connection restricts the number of value assignments which can be transferred in one interpolation cycle. All value assignments are combined in the next main run block and performed immediately this block is executed. A main run block is the block at which you would stop in single block mode SLB1. Examples:
Blocks with a real traversing movement (G0 X100), Stopre, G4, WAITM, WAITE,… The alarm occurs if the number of link variables set in any interpolation cycle exceeds the number that can be transferred. The link variables are not transferred until one of the next interpolation cycles. The assignment is not lost!
– Alarm display.
– Warning display.
Insert main run blocks between the assignments if the program sequence allows. See also $A_LINK_TRANS_RATE.
Clear alarm with the Delete key or NC START.
- Siemens Diagnostics Guide by Siemens