RDT RM96xx Manual de usuario descargar pdf (Pagina 22)

Smart_DP RM 9600 User Manual

Seite 21

F.3.6 Diagnose data for a ‘Radio Slave’

The Smart_DP module provides the Profibus master the possibility to obtain diagnose informa-

tion about errors from the Profibus slave device (Radio Slave). Because of that, the Smart_DP

module is coding the diagnose information in 7 Profibus user-specific diagnose bytes.

Byte (user specific) Bit Description

1 to 4 Internally (DPV1) used

0 RS-232 TX-Buffer Overflow

1 RS-232 RX-Buffer Overflow

2 Inputlength-Error

3 Outputlength-Error

4 Baudrate-Error

5 Parity-Error

6 Stopbit-Error

7 Bytesize-Error

6 0 LRC Error

1-6 Not used

7 RADIO_TX_FULL

7 0 NO_LINK

1-7 Not used

The first 4 bytes of the user-specific diagnose data, the bit 1 to 6 in the 6

byte and the bit 1 to

7 in the 7

byte respectively are not relevant for information.

For radio modem operation, the following diagnose information is important:

LRC Error: This error bit signals to the profibus master, that the actual checked LRC Byte

from the corresponding partner was wrong.

RADIO_TX_FULL: This parameter informs the profibus master that the radio modems TX

buffer is full.

NO_LINK: This error bit signals to the profibus master, that no actual data is transmitted from

the polling Radio Master system since a configured time.

The remaining diagnose bits mentioned above are not relevant in that case.

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RDT RM96xx Manual de usuario Pagina 22