Extended Status Block View¶
| Parameter | Values | Description |
|---|---|---|
| Bus and master main errors | MSK_PROFIBUS_APM_EXT_STA_CTRL_ERR | CONTROL-ERROR: This error is caused by incorrect parameterization. |
| MSK_PROFIBUS_APM_EXT_STA_ACLR_ERR | AUTO-CLEAR-ERROR: The device stopped the communication to all slaves and reached the auto-clear end state |
|
| MSK_PROFIBUS_APM_EXT_STA_NEXC_ERR | NON-EXCHANGE-ERROR: At least one slave has not reached the data exchange state and no process data are exchanged with it. |
|
| MSK_PROFIBUS_APM_EXT_STA_FATL_ERR | FATAL-ERROR: Because of a severe bus error, no bus communication is possible any more |
|
| MSK_PROFIBUS_APM_EXT_STA_NRDY | Host-NOT-READY-NOTIFICATION: Indicates, if the host program has set its state to operative or not. If the bit is set, the host program is not ready to communicate |
|
| MSK_PROFIBUS_APM_EXT_STA_TOUT | TIMEOUT-ERROR: The Device has detected an overstepped timeout supervision time because of rejected PROFIBUS telegrams. It’s an indication for bus short circuits while the master interrupts the communication. The number of detected timeouts are fixed in the Time_out_cnt variable. The bit will be set when the first timeout was detected and will not be deleted any more. |
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| Master main state | Offline | In OFFLINE state, there is no communication (data transfer) permitted at all. This is the state after initialization. This means, the master is waiting for a signal to start and does not participate in the token ring of the PROFIBUS access control mechanism |
| Stop | In STOP state, there is no data transfer permitted between master and slaves. Data transfer to other masters in multi-master system is allowed, however. The bus parameter set has been loaded successfully in order to get into STOP state. | |
| Clear | In CLEAR state, the master is able to read the input data from the DP slaves. The master forces the outputs to the slaves to be in a safe state (i.e. they contain only the value 0). For instance, incorrect data transfer of a slave can cause the PROFIBUS DP master to fall back from OPERATE state to CLEAR state. Parameterization and configuration checks are possible in this state. | |
| Operate | In OPERATE state, unrestricted data transfer is possible. This data transfer is cyclic, i.e. periodically, the input values are read from the slaves and the output data are written to the slaves. | |
| Location of error | 0..125 | Address of the slave with error |
| Error event | Not used currently | |
| Bus error counter | Counter for the bus error events | |
| Number of bus timeouts | Counter for bus timeouts |