02.2004 Communication / USS
Siemens AG 6SE7087-6QX70 (Version AD)
SIMOVERT MASTERDRIVES Compendium Motion Control 8.1-37
The rules for generating the value which is entered in parameter P053
for specifying parameter access is explained with the following
example.
Setting the parameterizing enable for SIMOVERT MASTERDRIVES
with SCB2
Setting:
Write access to the parameters of the basic units (P parameters) via
the PMU as well as via the USS protocol at both SCom1 interfaces and
on SCB2
Parameter number Value Comments
P053 14
2 = PMU, 4 = SCom1, 8 = SCB2
→ value = 2 + 4 + 8 = 14
As already described in Section 8.1.2.3 (PZD area), the PZD area
consists of a maximum of 16 words. During start-up, the length of this
area is defined in words using parameter P703 (SST/SCB PZD #). This
definition applies to the telegram from the master to the converter and,
vice versa, to the telegram from the converter back to the master. In the
telegram from the master to the converter, the PZD area contains
control word 1 or control word 2 and the setpoints. In the telegram from
the converter to the master, status word 1 or status word 2 and the
actual values are transferred.
1 word 1 word 1 word 1 word
PZD1 PZD2 PZD3 • • • PZD16
Maximum 16 words
Minimum 0 words, i.e. no PZD area in the net data block
Here, process-data interconnection is only described for the basic units.
Process-data interconnection for the technology boards is described in
their instruction manual.
Example
Parameterizing
process-data
interconnections
NOTE
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