HEIDENHAIN TNC 335 Technical Manual - Manual (Page 217)

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TNC 360 6 Display and Operation 8/95
MP7274 Expanded spindle display
Input values: 0 to 3
Bit 0 Display of current gear range +0 = No display
+1 = Display
Bit 1 Display of spindle power +0 = Acquisition via analog input
(Value range 0 to 4.999 [V])
+2 = Acquisition via PLC Word W600
(Value range 0 to 65.535)
MP7275 Reference value of displayed spindle power
for acquisition via analog input
Input range: 0 to 4.999 [V]
for acquisition via PLC Word W600
Input range: 0 to 43 690
MP7275 Value for spindle power display
Example 1: Acquisition via analog input
A voltage of 0 to 4.999 volts is acquired via analog input. The spindle power should be displayed
between 0 and 150 %.
0 [V] 3.333 [V] 4.999 [V]

_________________________________________________

_______________

0% 100 % 150 %
Example 2: Acquisition via PLC Word W600
The information needed to display the spindle power is acquired through the 8 PLC inputs I100 to
I107. Values between 0 and 127 can be acquired. You wish to display the spindle power between 0
and 150 %. The reference value at 100% results as follows:
127
150
x 100 = 84.66
The information is to be evaluated and displayed through the word W600:
Machine parameters:
MP7274 = 2
MP7275 = 85
PLC Program:
.
.
.
LW I100
;Read in the status of the PLC inputs I100 to I107.
A K+255 ;Evaluate only the lower 8 bits (PLC inputs)
= W600 ;and transfer for the spindle power display.