HEIDENHAIN iTNC 530 HSCI Technical Manual page 1724

Group Group
name number
ID....
PLC data
PLC data
Block transfer of up to 8 variables possible
Example, "Writing Q parameters to PLC markers":
FN 17: SYSWRITE ID2000 NR10 IDX880 = BLOCK Q1620 - Q1627
2000
The function FN 17: SYSWRITE ID 2001 is identical to the function FN 17: SYSWRITE ID 2000, but it
makes it possible to exchange data between the NC program and the PLC without synchronization.
However, there are many constraints on using the function FN 17: SYSWRITE ID 2001, which are
difficult to estimate.
This new FN function (FN 17: SYSWRITE ID 2001) may only be used after consultation with
HEIDENHAIN.
2001
Set PLC markers for tapping
2020
1724
System data System data
number index
NR.... IDX....
10 Marker no.
60 Byte no.
70 Word no.
80 Double-word no. PLC double word
10 Marker no.
60 Byte no.
70 Word no.
80 Double-word no. PLC double word
90 Output marker
no.
100 Output byte no.
110 Output word no. Profibus operand output word
120 Output double
word no.
1 –
System datum
PLC marker
PLC byte
PLC word
PLC marker
PLC byte
PLC word
Profibus operand output marker
Profibus operand output byte
Profibus operand output double word
Set PLC markers 4030 and 4031 for
tapping.
HEIDENHAIN Technical Manual iTNC 530 HSCI