6 – 472 HEIDENHAIN Technical Manual TNC 426, TNC 430
Current controller Use the integrated oscilloscope to adjust the current controller. The speed and
position control loops are open when you adjust the current controller. You
must therefore activate a special PLC commissioning program:
7
77
7 Enter the name of this PLC program in the OEM.SYS file with the instruction
PLCPWM=.
It suffices to program an EM (end module).
The drive must be enabled externally and the TNC needs the “ready” signal.
As soon as the PLC program defined with PLCPWM= is active, you can use
Module 9168 to interrogate the commissioning status.
Module 9168 Interrogating the commissioning status
Call:
CM 9168
PL D <Status>
–1: Commissioning not active or as yet no axis is selected
Bits 0 to 5 correspond to selected axes 1 to 6
Bit 15 – Spindle selected
Bit 16 – Circuit type of the spindle
0: Wye connection
1: Delta connection
MP2512.x 0 Limiting the integral factor of the speed
controller
MP2520.x 0 Differential factor of the shaft speed
controller
MP2530.x 0 PT
2
element of the speed controller
MP2540.x 0 Band-rejection filter damping
MP2550.x 0 Band-rejection filter for center frequency
MP2600.x 0 Acceleration feedforward
MP2602.x 0 IPC time constant T
1
MP2604.x 0 IPC time constant T
2
MP2606.x 0 Following error in the jerk phase
MP2610.x 0 Friction compensation at low motor speed
MP2612.x 0 Delay of the friction compensation
MP2620.x 0 Friction compensation at rated speed
MP2630.x 0 Holding current
MP2800.x 0 Motion monitor for position and speed
MP Temporary
input value
Meaning
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