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HEIDENHAIN TNC 407 (243 020) Technical Manual User Manual

Page 725

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01.98

TNC 407/TNC 415/TNC 425

3 Machine interfacing

11-11

MP1960

Compensation for reversal spikes on circular interpolation at the quadrant
transitions for digitally controlled axes
Entry: –1.0000 to +1.0000[mm]

MP1960.0

X axis

MP1960.1

Y axis

MP1960.2

Z axis

MP1960.3

4th axis

MP1960.4

5th axis

For digitally controlled axes reversal spikes of the order of the entry range of MP1960.x are
compensated during circular interpolation at the quadrant transitions.

MP1970

Motion monitor for position and speed
Entry: 0 to 300.0000 [mm]
0 => No monitoring

MP1970.0

X axis

MP1970.1

Y axis

MP1970.2

Z axis

MP1970.3

4th axis

MP1970.4

5th axis

MP1970 is used to set encoder monitoring. The position is computed from the pulses received from
the position encoder (LS) and from the pulse received from the rotary encoder (ROD). The input
value from MP1955 is used for this. The difference between the two results must not exceed
MP1970. Movement monitoring by MP1140 is not active.

The movement monitor must be active at all times for safety reasons. It can only be
deactivated by entering 0 while approach behaviour is being trimmed if the "Gross
positioning error C" message appears despite the maximum value of 1 [mm] being
entered.

MP1980

Delayed shutdown of speed controller in EMERGENCY STOP
Entry: 0 to 1.9999 seconds

In the event of a fault, braking resistors in the servo amplifier are required to stop the axes as quickly
as possible to prevent danger from axes running down uncontrolled. This braking time can be
reduced by delaying the shutdown of the TNC speed controller in MP1980.

At the same time, the controller outputs a braking torque which immediately brings the machine to a
stop.