Siemens SIMATIC NET PROFIBUS Manual de servicio Pagina 180

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Description of the DP Functions, Data, and Error Codes
DP Base Programming Interface for CP 5613/CP 5614
180
C79000-G8976-C108-01
Byte 2 (Stationstatus_2)
Each bit in byte 2, the "station_status_2“ byte has a special meaning.
Bit Meaning
7
Diag. Deactivated
- This bit is set as soon as the DP slave is
indicated as inactive in the local parameter record and was taken out
of cyclic processing.
6 reserved
5
Diag. Sync_Mode
- This bit is set by the DP slave as soon as it
receives the Sync control command.
4
Diag. Freeze_Mode
- This bit is set by the DP slave as soon as it
receives the Freeze control command.
3
Diag. WD_On (Watchdog on)
- This bit is set by the DP slave. If this
bit is set to 1, the watchdog monitoring is activated on the DP slave.
2 The DP slave always sets this bit to 1.
1
Diag.Stat_Diag (Static Diagnostics)
- If the DP slave sets this bit,
the DP master must fetch diagnostic information until the bit is
cleared. The DP slave, for example, sets this bit when it is not
capable of providing valid user data.
0
Diag. Prm_Req
- If the DP slave sets this bit, it must be reassigned
parameters and be reconfigured. This bit remains set until parameters
have been assigned (if bit 1 and bit 0 are set, bit 0 has the higher
priority).
Byte 3 (Stationstatus_3)
Bit Meaning
7
Diag. Ext_Diag_Overflow
- If this bit is set, there is more diagnostic
data than can be indicated. The DP slave sets this bit, for example,
when there is more channel diagnostic data than the DP slave can
enter in its send buffer. The DP master also sets this bit when the DP
slave sends more diagnostic data than the DP master can
accommodate in its diagnostic buffer.
6 to 0 reserved
Byte 4 (Diag. Master_Add )
The address of the DP master that assigned parameters to the DP slave is entered
here. If the DP slave has not been assigned parameters by a DP master, the DP
slave sets the address 255 in this byte.
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