09.02  Start-Up 
Siemens AG    6SE7087-6AK85-1AA0 
4-39 
Rectifier/Regenerating Unit    Operating Instructions 
 
4.3.9.3  Download or upread   (P052 = 3) 
P052 has to be set to 3 when a "download" (write) or "upload" (read) has to be carried out for the parameters of 
the rectifier/regenerating unit at the basic unit interface (SST1) using USS protocol (e.g. using D or OP1S). 
 
“Upread/Download" can be selected in the following statuses: "Switch-on inhibit" (008), "Ready-to-switch-on" 
(009) or "Fault" (007). 
 
Procedure:
 
⇓  P052 = 3  Function selection   “Upread/Download 
 
⇓  P key  The operating display appears(021) 
 
- Using a PC at the basic device interface SST1 and an appropriate application program (e.g. 
DriveMonitor), it is possible to read and change all parameters independently of their 
operating state and access level (P051). 
 
⇓  P052 = 0  Function selection   Return 
 
⇓ P key  
 
⇓  After return, the operating display appears, "Switch-on inhibit" (008) or "Ready-to-switch-on" 
(009) 
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