Xy z, Iv v, Xy z iv v – HEIDENHAIN TNC 335 Technical Manual User Manual
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TNC 360
10 Electronic handwheel
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10.3.1 Assignment of keys and LEDs to the PLC inputs and outputs
The 12 keys of the HR 332 handwheel are assigned to various PLC inputs and the 12 indicator LEDs
to various PLC outputs according to the input value of the machine parameter MP7645.0.
When a key is pressed, the corresponding PLC input is set. When a PLC output is set, the
corresponding LED lights up.
The PLC inputs I160 and I175 generate signal edges. The positive edge is assigned to markers
M1660 to M1675, the negative edge is assigned to markers M1860 to M1875.
If MP7645.0 = 0 the keys X, Y, Z, IV and their
LEDs are assigned to the NC. The remaining
keys are assigned to the PLC inputs I164 to I170.
the LEDs are assigned to the PLC outputs O100
to O106.
X
Y
Z
O101
I
165
O105
I
169
O106
I
170
O103
I
167
O104
I
168
IV
V
O102
I
166
O100
I
164
If MP7645.0 = 1 all twelve keys are assigned to
the PLC inputs I160 to I171 and all LEDs to the
PLC outputs O96 to O107.
O105
I
169
O106
I
170
O107
I
171
O103
I
167
O104
I
168
O101
I
165
0
O98
I
162
O102
I
166
0
O99
I
163
0
O96
I
160
O100
I
164
0
O97
I
161
In the standard version of the HR 332 the keys
assigned the following functions:
X
Y
Z
IV
V
The key without symbols can be assigned any
function by the PLC program.