February 2012 17 – 227
Current and
speed controllers
switched on
The PLC module 9161 must be called.
This module serves to activate the current and speed controllers for digital control loops individually
for each axis.
(If necessary, ask the machine manufacturer in which program section this module is called.)
Some machine
parameters
MP2040 Axis groups for drive enabling via fixed PLC inputs
Format: %xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx (bit #31 = spindle)
Input: 0: Axis/spindle not assigned
1: Axis/spindle assigned
MP2040.0-2 Group 1 to 3
MP2040.3-7 Reserved, enter %00000000000000000000000000000000
MP2170 Waiting time between the switch-on of the drive and the drive’s standby signal
Input: 0.001 to 4.999 [s]
0: 2 [s]
MP4132 Axis-specific or axis-group-specific PLC input for drive enabling
Input: 0 to 2000: Number of the PLC input or symbolic PLC operand
-1: Function inactive
Many analog servo drives provide a ready signal that can be evaluated by the PLC program of the
iTNC 530 HSCI . Normally, the drive is only enabled, after the servo drives have reported that they
are ready. --> Observe LEDs and LCD displays of the drives!
A number of servo drives do not provide a "ready" signal. In this event the drive enable must be
set without actually knowing the status of the drives. If an axis or spindle cannot be operated, as
the drive is not ready, an error message (e.g. Servo lag) is generated.
The word W1024 or the double word D110 contains the axes enabled by the NC.
The word W1060 or the double word D1172 contains the axes for which the feed rate was
individually enabled by the PLC.
If the marker M4563 is set, the PLC enables the feed rate in all axes (either W1060 / D1172
or M4563 is used).
The word W1040 or the double word D1132 contains the axes in which the control loop is opened
by the PLC (e.g. clamped axes).
Whether words or double words are used, depends on the setting of bit 14 of MP4020:
Bit 14 = 0 --> PLC interface for up to 14 axes
Bit 14 = 1 --> Expanded PLC interface for up to 18 axes
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