Interface plc <˘> nc operating system – Lenze ETC Motion Control User Manual
Page 254
Interface PLC <˘> NC operating system
Definitions
Data block 1
5.1
5.1.2
l
254
EDSTCXN EN 2.0
Data word
Name
Direction
Type of signal
032.00
Acknowledgement for M function
PLC
→
NC
Acknowledgeme
nt
The signal is set to "0" when the PLC has detected the value "0" of the strobe
for M functions and accepted the data of the M functions transferred by the
NC. It is set to "1" when the strobe has accepted the value "1" again (
¶ 240).
Effect in the NC: If the signal has the value "1", new data can be transferred
to the PLC; in the case of value "0", the PLC has accepted the pending data.
In this case, the strobe is set from "0" to "1" for signaling that the acceptance
was successful. When the signal changes from "1" to "0", the NC starts to
process the next block provided that the "Read enable" has been activated.
Data word
Name
Direction
Type of signal
033.00
Acknowledgement for H function
PLC
→
NC
Acknowledgeme
nt
The signal is set to "0" when the PLC has detected value "0" of the strobe for
H functions and accepted the data of the H functions which has been trans-
ferred by the NC. It is set to "1" when the strobe has accepted value "1" again.
Effect in the NC: If the signal has the value "1", new data may be transmitted
to the PLC, in the case of value "0", the PLC has accepted the pending data.
In this case, the strobe is set from "0" to "1" by the NC (acceptance signal has
been detected). If the data acceptance takes longer (>10 sec.), the "Read ena-
ble" signal must be canceled prior to setting the acknowledgement signal.
When the signal switches from "1" to "0", the NC starts to process the next
block if "Einlesefreigabe" "Read enable" has been activated.
Data word
Name
Direction
Type of signal
035.00
Enable ext. synchronization signal
PLC
→
NC
Enable
Meaning: reserved
Effect in the NC: reserved
Data word
Name
Direction
Type of signal
035.08
Program stop active
PLC
→
NC
static
The PLC uses "1" to signal to the HMI that the process of a NC program has
been stopped.
Effect in the NC: none