Lenze E84Dxxxx - Manual (Page 70)

EDS84DPBUS EN 2.0 - 09/2010
L
70
Communication manual 8400 protec PROFIBUS
Diagnostics
Querying the current bus status
11.3 Querying the current bus status
Code C13861 displays the current PROFIBUS status is a bit-coded form:
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_EX If the parameter settings and the configuration have been
accepted by the firmware and by the application, the slave
state changes to DATA_EXCHANGE (exchange of user data
with the master).
1 1 Not possible
Bit 7 Bit 6 Status of watchdog state machine (WD-STATE)
0 0 BAUD_SEARCH The PROFIBUS slave is able to recognise 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 status serves for response monitoring of
the master.
1 1 Not possible
Bit 11 Bit 10 Bit 9 Bit 8 Detected PROFIBUS baud rate
0 0 0 0 12 Mbps
0 0 0 1 6 Mbps
0 0 1 0 3 Mbps
0 0 1 1 1.5 Mpbs
0 1 0 0 500 kbps
0 1 0 1 187.5 kbps
0 1 1 0 93.75 kbps
0 1 1 1 45.45 kbps
1 0 0 0 19.2 kbps
1 0 0 1 9.6 kbps
Bit 15 Bit 14 Bit 13 Bit 12 Reserved