02.2004 Communication / USS
Siemens AG 6SE7087-6QX70 (Version AD)
SIMOVERT MASTERDRIVES Compendium Motion Control 8.1-33
USS protocol at the SCom2 (only in Compact type and chassis
type units)
♦ Setting:
USS protocol with 38.4 kbit/s and 4-word PKW area and 6-word
PZD area
• 4-word PKW area:
With this setting, all parameters whose values are 16-bit (= 1
word) or 32-bit (double word) quantities can be read or written via
the USS protocol.
• 6-word PZD area:
Transfers control words 1 and 2 and a maximum of four setpoints
(each of them 16 bits) from the master to the converter or control
words 1 and 2 (each one of them 16 bits) and a maximum of four
actual values (each one of them 16 bits) from the converter to the
master.
♦ Preconditions:
P060 = 1 or 7
♦ Parameterizing the SCom2 interface (CUPM, CUMC: X103,
CUVC: X101):
Parameter
number
Parameter Index and value
(index i002 for SCom 2)
Comments
P700 SCom/SCB BusAddr i002 = 15 Bus address, SCom 2 = 15
P701 SCom/SCB Baud i002 = 8 38.4 kbit/s
P702 SCom/SCB PKW # i002 = 4 4-word PKW (SCom 2)
P703 SCom/SCB PcD # i002 = 6 6-word PZD (SCom 2)
P704 SCom/SCB TlgOFF i002 = 0 to 6500
0: No monitoring
>0: Monitoring time in ms
Example 2