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3 Data
Transfer
Measured values, part programs and operating parameters
can transferred over the
PT
85O's RS-232-C data interface.
The data interface can operate with two different dala transfer
protocols:
... External data transfer protocol
(EXT)
for primers. punching
umts. readers and other penpherals.
3.1
Measured
Value Output
The current display value can be transferred over the
RS-232-C data interface to peripheral equipment such as a
printer. After an external storage command. the measured
value is output (for a maximum of
4
axeslthrough an internal
buffer. The storage signal can be generated
via
the RS-232·C
interface
or
via
the -external functions·.
ｾ ｬ
=1J!,
==it,
T
trne
po,nt 01 storage
ｴ ｾ Ｂ Ｂ
"
ｾ
tD
Data output
When the control character CTRL
B
(= STXl is transmitted. a
storage signal is generated and the measured value is trans-
mitted over the
TXD
output of the RS-232-C data interface.
The duration of data transfer depends on the selected baud
rate, the number of axes and the number of line feeds.
t
1
s:
0.5 ms
t
2
::iii30ms+(5msxN)
t3&:
Oms
_176xM+ILxl')s
to -
Baud rate
3.1.1
Storage via
RS-232·C
Interface
Select
FE
or
EXT
protocol vIa the arrow keys In the corre·
sponding menus.
.... FE
data transfer protocol (FEl for the HEIDENHAIN FE 401
Floppy Disk Unit or a suitably adapted computer.
Data Transfer
Start
Data Transfer
Protocol
With
Measured value
EXT
RS-232-C interface
output
ICTRL BI
Ext.
functIons
(pulse. contact)
Program
"FE or
"EXTERNAL INPUT"
input
EXT
menu
Program
"FE or
"EXTERNAL OUTPUT"
output
EXT
menu
Input and output
"FE or
ｾ ｏ ｐ ｅ ｒ ａ ｔ ｉ ｎ ｇ
of operating
EXT
PARAMETERS- menu
parameters
.
L
=
Number of line feeds
M "'" Number of axes
N
=
Number of rotary axes (degreeS/min/secl
Interruption
of Data Transfer
The receiving device can interrupt and restart data transfer by
.... StarVstop via the RXD input of the data interface
DC3
=
X OFF
=
CTRL S: interrupt data transfer
DC1
=
X ON
=
CTRl
Q: resume data transfer
.... Control line CTS
After the stop signal CTS or the stop character DC3 has been
received. no more than 2 additional characters can be output.
T24 Technical Description
Technical Description T25
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