Siemens SIMOVERT MASTERDRIVES Manual page 280

Communication / USS
8.1.5.2 Parameterizing the parameterizing enable and process-data
interconnections (2nd step)
Parameterization of
the parameterizing
enable
NOTE
8.1-36
During start-up, an interface with the USS protocol must be explicitly
enabled for parameterization in order to be able to change (= write) the
parameters of a SIMOVERT MASTERDRIVES via this interface − this
applies to the parameters of the basic unit (P/U parameters) and to the
technology-board parameters (H/L parameters).
Access to the SIMOVERT MASTERDRIVES via USS protocol is only
possible if, during start-up, the PKW area is appropriately defined to
contain 3, 4 words (fixed length) or a variable PKW length (= value 127)
in the useful (net) data area.
The following rules apply to this:
♦ All parameters (P, r, U and n parameters of the basic units, or H, d,
L and c parameters of the technology board) can be read out via
any interface. For reading purposes, it is not necessary that the
interface has been enabled for parameterization.
P, U, H and L parameters:
r, n, d and c parameters:
♦ Parameterizing enable is specified in parameter P053 (parameter
access). This parameter can always be written from any interface.
♦ Several interfaces can be in possession of a parameterizing enable
simultaneously.
S CB 2
H parameters
d parameters
T1 00
P parameters
r parameters
C UPM
C UM C
Fig. 8.1-16 Parameterizing enable for the USS interfaces
Can be read and written
Can only be read
Interfaces
USS interface
USS interface
USS interface at SCom2
(not in Compact PLUS)
USS interface at SCom1
PMU
6SE7087-6QX70 (Version AD)
Compendium Motion Control
02.2004
Value for P053
8
16
32
4
2
Siemens AG
SIMOVERT MASTERDRIVES