HEIDENHAIN ND 287 User Manual - Manual (Page 114)

114
II Installation, specifications
II – 6 Measur
ed v
a
lue output
Measured-value output via the serial data
interface X31 or X32
Use the PRINT soft key or the CTRL B command to transmit the
currently displayed values in either Actual Value or Distance-To-Go
mode, whichever is currently active (see "Operating modes" on page
30), via either the RS-232-C/V.24 or the USB interface to a PC.
CTRL B
command:
 RS-232-C/V.24 interface:
If the ND receives the CTRL B command over the RXD line of the
interface, it transmits the measured values back over the TXD line
(see "Data interface" on page 100).
 USB Type B:
This interface supports bidirectional data communication. Data
transfer is started with the CTRL B command.
Data transfer:
 The measured values can be received and saved using a terminal
program (e. g. HyperTerminal, which is included with Windows ®).
You can also use the TNCremo software. TNCremo is available
from HEIDENHAIN free of charge. You will find the software at
www.heidenhain.de
on the downloads page under
Documentation and Information .
 The basic program (see Fig. II.75) shows the fundamental structure
of a program for measured value output.
Propagation times
Danger to internal components!
The interfaces X31 and X32 comply with the requirements
of EN 50 178 for low voltage electrical separation.
Do not engage or disengage any connecting elements
while the unit is under power!
Fig. II.75 Basic program for measured value output
with CTRL B
Fig. II.76 Propagation times for measured value
output after CTRL B
10 L%=18
20 CLS
30 PRINT "V.24/RS-232-C"
40 OPEN "COM1:9600,E,7" AS#1
50 PRINT #1, CHR$ (2);
60 IF INKEY$<>""THEN 130
70 C%=LOC(1)
80 IF C%
90 X$=INPUT$(L%,#1)
100 LOCATE 9,1
110 PRINT X$;
120 GOTO 50
130 END
t
1
t
2
Ctrl B
t
D
t
3
Ctrl B
Event Time
Latching delay t
1
t
1
≤ 1 ms
Measured-value output after t
2
t
2
≤ 50 ms
Regeneration time t
3
t
3
≥ 0 ms