HEIDENHAIN ND 286 - Manual (Page 4)

Data Output
There are four ways to output data:
➤ Press the MOD key until the PRINT indicator starts blinking (only possible with
"slow" data output), and start data output with the ENT key; or
➤ Send measuring data to the data output periodically; or
➤ Input a latch command over the D-sub connection EXT; or
➤ Input a latch command over the BCD connection.
Interface mode (see operating parameter P53)
Slow:
Output display values
Fast: Output instantaneous values referenced to datum 1
(MIN/MAX/DIFF display values are not output)
A connecting cable (to a PC, for example) is available from HEIDENHAIN
(Id.-Nr. 206 420 ..); cable length up to 10 m (32.8 ft).
Operating parameters for data output: P23, P53 to P57
“ AMP-CHAMP“ connection (36-pin, female)
Pins Assignment Pins Assignment
2 0 2 1 2 2 2 3
1 2 3 4 Decade 1 33 Sign
5 6 7 8 Decade 2 34 Ready
9 10 11 12 Decade 3 35 Meas. val. output
13 14 15 16 Decade 4 36 0V
17 18 19 20 Decade 5
21 22 23 24 Decade 6
25 26 27 28 Decade 7
29 30 31 32 Decade 8
Output levels Low: U
≤
0.4 V with I
≤
6 mA High: U
≥
3.8 V with I
≤
2.6 mA
The output signals are TTL-compatible.
Latch levels Low: U
≤
0.9 V with Imax
≤
6 mA High: U
≥
3.9 V; or
TTL levels (internal 10 k
Ω
pull-up resistor).
Signal transit times
The following table lists approximate signal transit times. If you use the slow
data output and run functions such as measuring series or inch display at the
same time, the actual transit times can be twice as long as those listed here.
Concurrent data output (P55 )
Mode
P53 Latch time Data output after
Fast P54 Value from P54 / 2
Slow t
≤
30 ms t
≤
8 ms
Data output after external latch (P55 or )
Mode
P53 Min. pulse duration Measured value stored after
Pulse / BCD Contact BCD Pulse Contact
Fast 3 µs 7 ms 0.3 µs 1.1 µs 4.8 ms
Slow t
≥
8 ms t
≥
13 ms 0.3 µs 1.1 µs 4.8 ms
Data output Latch again after
Pulse/BCD Contact
Fast
≤
0.3 µs after internal latching 3 µs 7 ms
Slow
≤
7.5 ms after internal latching 3 µs 7 ms