1046 HEIDENHAIN Technical Manual MANUALplus 620
6.19.2 Structure of the 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. 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 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.
The CC 61xx family has a modular structure. The addressed DSP is on the
motherboard of the controller. 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 (with DSP).
Up to two controller expansion boards can be connected to a drive-control
motherboard (with 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.
If two drive-control motherboards (two DSPs) are housed in one CC, then the
inputs and outputs of the CC are uniquely assigned to one of the two 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). Index B means that these inputs and outputs
are controlled by the second DSP (second drive-control motherboard).
For configuring the controller units via machine parameters, the HSCI address
of the respective drive-control motherboard must be entered in
MP_hsciCcIndex. 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.
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