HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 417)

HEIDENHAIN TNC 620 417
1
0
.8 A
d
ditional F
unctions
The following conditions are permitted in the FN 20 block:
In addition, the FN20: WAIT FOR SYNC function is available. WAIT FOR
SYNC
is used whenever you read, for example, system data via FN18
that require synchronization with real time. The TNC stops the look-
ahead calculation and executes the subsequent NC block only when
the NC program has actually reached that block.
Example: Stop program run until the PLC sets marker 4095 to 1
Example: Stop program run until the PLC sets the symbolic
operand to 1
Condition Abbreviation
Equals ==
Less than <
Greater than >
Less than or equal <=
Greater than or equal >=
32 FN20: WAIT FOR M4095==1
32 FN20: APISPIN[0].NN_SPICONTROLINPOS==1