Structure Of Station Status 2 (Byte 1) - Siemens Metro 21 M216KA Operator's Manual

Structure of
Station Status 2
Structure of
Station Status 3
Definition of the
Master PROFIBUS
Address
Structure of the
Master PROFIBUS
Address
Definition of the
Manufacturer ID
Structure of the
Manufacturer ID
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
Station status 2 provides additional information about the DP slave and is
structured as follows:
Table 5-5

Structure of Station Status 2 (Byte 1)

Bit
0 1: Parameters have to be assigned again to the DP slave.
1 1: A diagnostic message has been issued. The DP slave cannot
resume operation until the fault has been corrected (static
diagnostic message).
2 1: The bit is always set to "1" if the DP slave having this PROFIBUS
address is present.
3 1: Response monitoring has been enabled for this DP slave.
4 1: The DP slave has received the "FREEZE" control command
5 1: The DP slave has received the "SYNC" control command
6 1: The bit is always set to "0".
7 1: The DP slave is disabled – that is, it has been removed from the
processing in progress.
1
The bit is updated only if another diagnostic message changes too.
Station status 3 is reserved and is not relevant in as far as the diagnostics of
the ET 200L distributed I/O device are concerned.
The Master PROFIBUS Address diagnostic byte stores the PROFIBUS ad-
dress of the DP master which has assigned parameters to the DP slave (refer
to Figure 5-1, byte 3).
The master PROFIBUS address comprises one byte with the PROFIBUS ad-
dress of the DP master that assigned parameters to the DP slave and has read
and write access to the DP slave.
A code is stored in the manufacturer identification that describes the type of
the DP slave (refer to Figure 5-1, bytes 4 and 5).
The manufacturer identification of the DP slave comprises two bytes. You
will find the manufacturer identifications of the different electronics blocks
in Appendix C, Table C-1 and C-4.
Meaning
g
Diagnostics
1
.
1
.
5-9