Measuring system inputs for square-wave signals, 1 connector assignments, 2 connecting cable – HEIDENHAIN TNC 407 (243 020) Technical Manual User Manual
Page 56: X6 = measuring system s, X5 = measuring system 5, 4 measuring system inputs for square-wave signals
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5.4 Measuring system inputs for square-wave signals
One measuring system with square-wave signals can be connected to the LE 415. Two such
systems can be connected to the LE 407. Maximum input frequency is 300 kHz.
5.4.1 Connector assignments
LE 407: X5, X6 measuring system 5, S
LE 415: X6 measuring system S
Flange socket with female connector insert (12-pin)
Pin Number
Assignment
5
U
a1
6
U
a1
––—–
8
U
a2
1
U
a2
––—–
3
U
a0
4
U
a0
––—–
7
U
aS
––—–
2
+ 5 V (U
P
)
12
+ 5 V (U
P
)
11
0 V (U
N
)
10
0 V (U
N
)
9 (contact spring)
screen = housing
5.4.2 Connecting cable
Please use only HEIDENHAIN-measuring system cables, connectors and couplings.
In order to be able to connect a measuring system to the square-wave signal input of the logic unit,
the sinusoidal signal from the measuring system must be converted to a square-wave signal. This
conversion is performed by the interpolation and digitizing electronics (EXE). The interpolation and
digitizing electronics is either integrated into the measuring system or made as an independent unit.
If the interpolation and digitizing electronics does not have its own power supply, it can be supplied
from the logic unit. In order to ensure a correct supply voltage, the total length of the connecting
cable between the interpolation and digitizing electronics and the logic unit must be limited (see the
following diagram).