09.02  Parameter List 
Siemens AG    6SE7087-6AK85-1AA0 
5-31 
Rectifier/Regenerating Unit    Operating Instructions 
PNU 
 
*
 
: Conf. 
    Par. 
OP1S parameter name 
 
Description 
Value range  
[phys. unit] 
Selection text 
Display 
Indices 
Factory- 
setting 
See 
Modify 
(access / 
status) 
P687 
* 
SCom/SCB TlgOFF 
Telegram OFF time of CUR and SCB 
If no correct telegram is received within the parameterized time a fault trip is 
set. 
 
Description for setting: 
Value 0:   No monitoring, no fault trip; must be parameterized for sporadic 
(acyclic) telegrams, e. g. operator panel OP at serial comm. interface 1. 
 
i001 = SST1:  serial comm. interface 1 (CUR) 
i002 = SCB:  SCB, if P682=1, 2, 3 
 
i003 = SST2:  serial comm. interface 2 (CUR with PTP1 option), if 
Peer-to-Peer protocol is selected (P688=1). 
  With active Peer-To-Peer protocol (P688 = 1) and telegram 
failure time P687.i003 ≠ 0, the unit remains in operating state
 
o
008 until telegram traffic is correct
 (see P688). 
  With  P687.i003 = 0
  AND  P681.i001 = 599  in the case of 
telegram failure
, bits 3 and 6 of the first SST2 Peer-to-Peer 
receive data (the control/status word sent from the partner unit 
in 12-pulse mode) are set to 0. 
 
PNU=2AFHex; Type=O2; Scaling: 1Hex 
=
∧
 1ms 
0 to 6500 
[ms] 
3 
i001=0 
i002=0 
i003=1 
2/    BR 
2/    BR 
P688 
* 
SST2 Protocol 
Selection of the protocol for SST2 (serial interface 2 (CUR with PTP1 
option)) 
 
0  Interface is provided for factory-internal diagnostics purposes (7 
data bits + 1 parity bit, even parity,1 stop bit) 
1 Peer-to-Peer protocol
 
(8 data bits + 1 parity bit, even parity,1 stop bit) 
With active Peer-To-Peer protocol (P688 = 1) and telegram 
failure time P687.i003 ≠ 0, the unit remains in operating state
 
o
008 until telegram traffic is correct.
 
 
PNU=2B0Hex; Typ=O2;  Normierung: 1Hex 
=
∧
 1 
0 to 1 
 
 
 
 
 
 
factory-internal 
Peer to Peer 
- 
0 
3/    BR 
3/    B 
P689 SCB Peer2PeerExt 
Immediate transfer on of data received via the peer to peer protocol of SCB. 
Mark of these words of the received peer to peer telegram which are to be 
transferred on immediately. 
 
0:  No immediate transfer (only to CUR) 
1:  Immediate transfer (and passing to CUR) 
 
i001 = W01:  Word 01 of the (process data part of the) telegram 
i002 = W02:  Word 02 of the (process data part of the) telegram 
  . . . . . 
i005 = W05:  Word 05 of the (process data part of the) telegram 
 
Condition: P682 = 3 (peer to peer protocol) 
 
PNU=2B1Hex; Type=O2; Scaling: 1Hex 
=
∧
 1 
0 to 1 
 
 
 
 
CUR only 
Transfer 
5 
0 
3/    BR 
3/    BR 
P690 
* 
SCB Act Values 
Actual value output via the serial communications interface of the SCB 
board. 
Defines, which parameter is to be transferred at which telegram address. 
 
Notes: 
Word 1 should be set for status word 1 (r552=r968) 
 
The length (number of words) of the process data part of the telegram is set 
with P686, Index 02 
 
i001  Word 01 of the (process data part of the) telegram 
i002  Word 02 of the (process data part of the) telegram 
... 
i016  Word16 of the (process data part of the) telegram 
 
PNU=2B2Hex; Type=O2; Scaling: 1Hex 
=
∧
 1 
0 to 999  16 
i001=968 
i002=0 
. . . 
i016=0 
3/    BR 
3/    B 
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