PROFIBUS DP communication module
9.9 Diagnosis with STEP 7
3RW44 soft starters
Manual, 03/2017, NEB535219502000/RS-AB/008
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Station status 2
Table 9- 11 Structure of station status 2 (byte 1)
Bit
Meaning
0
1: The DP slave must be parameterized again.
1
1: A diagnostic message is pending. The DP slave will not work until the fault is rectified
(static diagnostic message).
2
1: The bit is always "1" when the DP slave with this station address is configured.
3
1: Response monitoring is enabled for this DP slave.
4
1: The DP slave has received the "FREEZE" control command.
1)
5
1: The DP slave has received the "SYNC" control command.
1)
6
0: Bit is always "0".
7
1: The DP slave is deactivated, i.e. it is decoupled from the current processing.
1)
The bit is only updated if another diagnostics message also changes.
Station status 3
Table 9- 12 Structure of station status 3 (byte 2)
Bit
Meaning
0 to 6 0: Bits are always "0".
7
1:
•
There are more diagnostics messages pending than the DP slave is able to store.
•
The DP master cannot enter all the diagnostics messages sent by the DP slave in
its diagnostics buffer (channel-specific diagnostics).
