Lenze E94AYCPM Manual de usuario descargar pdf (Pagina 84)

12 Diagnostics

12.2 Diagnostics with the »Engineer«

Lenze · E94AYCPM communication module (PROFIBUS®) · Communication Manual · DMS 12.0 EN · 11/2012 · TD17

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Querying the current bus status

C13861

/ C14861 indicate the current PROFIBUS state in bit-coded form:

From software version 01.21, the current DP states are displayed in C13868

/ C14868 (see fig. [11-

1], chapter Short-time interruption of PROFIBUS communication ( 79)).

Bit assignment Description

Bit 3 Bit 2 Bit 1 Bit 0 Reserved

Bit 5 Bit 4 Status of the DP state machine (DP-STATE)

0 0 WAIT_PRM The slave waits for a parameter data telegram after

acceleration. Other types of telegrams will not be processed.

Data exchange is not yet possible.

0 1 WAIT_CFG The slave waits for the configuration telegram that specifies

the number of input and output bytes. The master informs

the slave about the number of I/O bytes that will be

transferred.

1 0 DATA_EXCH If the parameter settings as well as the configuration have

been accepted by the firmware and by the application, the

slave state changes to DATA_EXCH ("Data Exchange",

exchange of user data with the master).

1 1 Not possible

Bit 7 Bit 6 Status of the watchdog state machine (WD-STATE)

0 0 BAUD_SEARCH The PROFIBUS slave is able to detect the baud rate

automatically.

0 1 BAUD_CONTROL After recognising the correct baud rate, the slave status

changes to BAUD_CONTROL and the baud rate is monitored.

1 0 DP_CONTROL The DP_CONTROL state serves for response monitoring of

the PROFIBUS master.

1 1 Not possible

Bit 11 Bit 10 Bit 9 Bit 8 Detected PROFIBUS baud rate

000012 Mbps

00016 Mbps

00103 Mbps

00111.5 Mbps

0 1 0 0 500 kbps

0 1 0 1 187.5 kbps

011093.75 kbps

011145.45 kbps

100019.2 kbps

10019.6 kbps

Bit 15 Bit 14 Bit 13 Bit 12 Reserved

1 2 ... 79 80 81 82 83 84 85 86 87 88 89 ... 124 125

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Lenze E94AYCPM Manual de usuario Pagina 84

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