Siemens SPC3 Dokumentacja Pobierz pdf (Strona 29)

DPC31 HW

SchnittStellenCenter

DPC31 HW Description

Version V1.0 Page 27

DPS evaluates the first 7 bytes or the first 10 bytes for longer Prm messages (refer to Figure 5.2-3). The

evaluation is performed according to EN 50 170 Volume 2 and will not be discussed in more detail in this

description.

In the case of negative validation, DPS sets corresponding diagnostic bits and branches into the ‘Wait_Prm

mode’. If the master requests ‘Sync_Req’ or ‘Freeze_Req’ and the application does not support ‘Sync’ or

‘Freeze’ (Sync_Supported=0, Freeze_Supported=0 in the param register), the Prm message is not accepted

and the diagnostic flag ‘Diag.Not_Supported = 1’ is set. In case of positive validation (new, valid message),

DPS makes the transition to ‘Wait_Cfg’, and executes the following responses, depending on the data length:

• If ‘Lock_Req = 0’ and ‘Unlock_Req = 0’, only the parameter ‘MinTSDR’ is accepted internally (S/R unit)

and no response is initiated to the user. If ‘MinTSDR = 00H’, the old value is saved. The S/R unit waits

at least 11 T

Bit

prior to sending its response messages. If a MinTSDR < 11 is parameterized, the time is

set to 11 by the ASIC.

• If ‘Lock_Req = 1’ and ‘Unlock_Req = 0’, the DPS accepts the following values: Flag: WD_ON;

watchdog factors: WD_FACT1/2; the min station delay response: MinTSDR (if it differs from 0 and >10);

group generation: Group_Ident; the master address: Master_Add. For messages that are longer than 7

net parameter data bytes, the bits from the Spec_User_Prm_Byte are also accepted; otherwise, these

bits are assigned default values. The user indication New_Prm_Data is then triggered.

The acknowledgements ‘User_Prm_OK cmd/User_Prm_Not_OK cmd’ are read accesses to defined register

cells with the corresponding messages ‘Not_Allowed’, ‘User_Prm_Finished’, or ‘Prm_Conflict’ (refer to Table

5.2-6).

User_Prm_OK Cmd

(Read Operation):

0000 0 0 User_Ack

User_Ack

1..0

= 00

⇒

User_Prm_Finished

User_Ack

1..0

= 01

⇒

Prm_Conflict

User_Ack

1..0

= 11

⇒

Not_Allowed

User_Ack

1..0

= 10

⇒

not possible

User_Prm_Not_OK Cmd

(Read Operation):

0000 0 0 User_Ack

User_Ack

1..0

= 00

⇒

User_Prm_Finished

User_Ack

1..0

= 01

⇒

Prm_Conflict

User_Ack

1..0

= 11

⇒

Not_Allowed

User_Ack

1..0

= 10

⇒

not possible

Table 5.2.6:

Coding of User_Prm_(Not)_OK Cmd

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 93 94

Komentarze do niniejszej Instrukcji

Brak uwag

Siemens SPC3 Dokumentacja Strona 29

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Networking Siemens SPC3