HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 87)

SERVICE MANUAL TNC 415B/425
Page 82
Issue: 20.08.95
14.2 Handwheel HR 332
HR 332 Id.No. 266 064 --
Connecting cable Id.No. 272 292 --
Adapter cable Id.No. 274 556 01
(12-pin to 9-pin)
The assignment of the handwheel keys depends on the version.
* The number of the permissive buttons and the internal wiring depends
on the version of HR 332.
14.2.1 Checking the Handwheel HR 332
The serial handwheel HR 332 can be checked with an oscilloscope. The following signals can be measured at
the handwheel input X23 of LE 415B/425. The signals have to correspond to the diagram below.
The supply voltage for the handwheel is fed via the logic unit (X23 pin 2 = 0V, pin 4 = + 12V).
Pin Signal
designation
1
2
3
4
5
6
7
8
9
10
11
12
EMERG. STOP
EMERG. STOP
Permissive
button *
Permissive
button *
Permissive
button *
not connected
TxD
RxD
Housing shield
DSR
0V
+ 12V
Pin Signal
designation
2
4
6
7
8 0V
+ 12V
DTR
TxD
RxD