HEIDENHAIN TNC 320 (340 55x-03) - Manual (Page 409)

HEIDENHAIN TNC 320 409
1
0
.8 A
d
ditional F
unctions
The following conditions are permitted in the FN 20 block:
In addition to that 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 following 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