Data Output - HEIDENHAIN ND 221 Manual

Data Output

There are two ways to output data:
PRINT function: Press MOD (this method can be inhibited with
operating parameter P86); or
Enter the command STX (CTRL B) over the RXD input.
A connecting cable (to a PC, for example) is available from HEIDENHAIN
(Id.-Nr. 274 545 ..); cable length up to 20 m (66 ft).
Operating parameters for data output: P50, P51
Wiring, pin layout
Connecting cable is either completely wired (left) or only partially wired (right).
ND
CHASSIS GND 1
TXD 2
RXD 3
RTS 4
CTS 5
DSR 6
SIGNAL GND 7
DTR 20
CHASSIS GND: Chassis Ground; TXD: Transmitted Data; RXD: Received Data;
RTS: Request To Send; CTS: Clear To Send; DSR: Data Set Ready; SIGNAL GND:
Signal Ground; DTR: Data Terminal Ready
Signals
TXD, RXD
RTS, CTS, DSR, DTR
Data transfer format and transmission control characters
Format
Data word
Control characters
Sequence
Storage and transfer times
The duration of data transfer depends on the selected baud rate and on the number
of additional line feeds.
Latch signal
STX (CTRL) B
PRINT
1 CHASSIS GND
2 TXD
RXD
3
4 RTS
5 CTS
6 DSR
7 SIGNAL GND
DTR
20
Signal level "active"
–3 V to –15 V
+3 V to +15 V
ASCII code
1 start bit, 7 data bits, parity bit (even parity), 2 stop bits
Call measured value: STX (CTRL B), interrupt DC3 (CTRL S),
resume DC1 (CTRL Q)
Enquire error message: ENQ (CTRL E)
• Sign • Numerical value with decimal point • Blank space
• Unit (blank space = mm, " = inches, ? = error)
• 2 blank spaces
Storage time
≤ 1 ms
≤ 22 ms
ND
CHASSIS GND
TXD
RXD
RTS
CTS
DSR
SIGNAL GND
DTR
Signal level "not active"
+3 V to +15 V
–3 V to –15 V
• Carriage return
Data transfer time
1 1
2 2
3 3
4 4
5 5
6 6
7 7
20 20
• Line feed
≤ 23 ms
≤ 44 ms
CHASSIS GND
TXD
RXD
RTS
CTS
DSR
SIGNAL GND
DTR