1072 HEIDENHAIN Technical Manual iTNC 530 HSCI
7.4 Single-speed, double-speed, PWM frequency
7.4.1 General information
Structure of the new CC 61xx and UEC 11x controller units
There is no backplane between the CC and MC for the CC 61xx and MC 6xxx.
The CCs continue to be supplied via X69 and X74. The MCs of the new
generation are supplied with +24 V NC voltage via X101, independently of the
CCs.
A new DSP processor is used on the new CC 61xx and the UEC 11x. A single
one of these DSPs can regulate up to six control loops, with the same
controller performance as the CC 424 (B).
The CC 61xx family has a modular structure. The addressed DSP is on the
motherboard of the controller. Every drive-control motherboard is an HSCI
participant in the HSCI system. These drive-control motherboards have two
control loops, and can therefore control two axes. The same applies to each
drive-control expansion board, which does not have its own DSP, however. A
drive-control expansion board has two control loops, but can only be used in
combination with a drive-control motherboard (DSP).
As a result, a maximum of two drive-control expansion boards can be
controlled by one drive-control motherboard (DSP). This configuration results
in a maximum of six axes that a single DSP can control. If more than six axes
are to be controlled, then another drive-control motherboard is necessary,
providing another DSP. All axes that are controlled by a DSP belong to a
controller group.
If two drive-control motherboards (two DSPs) are housed in one CC (this
means two HSCI participants in one housing), then the inputs and outputs of
the CC are uniquely assigned to one of the two controller groups (DSPs) via
the letters A and B.
Index A means that these inputs and outputs are controlled by the first DSP
(first drive-control motherboard). All inputs/outputs that are assigned to a DSP
belong to a controller group (here: controller group A). Index B means that
these inputs/outputs are controlled by the second DSP (second drive-control
motherboard), and therefore belong to controller group B.
For configuring the controller units via machine parameters, the HSCI address
of the respective drive-control motherboard must be entered in MP108.x or
MP109.x . The HSCI address is obtained from the position of the drive-control
motherboard in the HSCI system. The first drive-control motherboard after
X500 of the MC is given the address 0, etc. However, the HSCI address to be
entered only depends on the drive-control motherboards in the system. I/O
units (PLs) and machine operating panels (MBs) are not taken into account.
This means that for the first drive-control motherboard, you have to enter the
address 0 in MP108, regardless of whether PLs or MBs are located before the
CC in the HSCI chain.
Due to the new structure of the CC 61xx, not all of the axis configurations
of the CC 424 can directly be implemented on the CC 61xx! Please note in
particular the changes in the available double-speed control loops of a
CC 61xx.
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