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Diagnostics and Error Handling
6.3.2
Contents of the DP Standard Section
DP Standard
Section
Station Status 1
Station Status 2
Station Status 3
6-16
The first 6 bytes of the diagnostic message (byte 0 to byte 5) are also known
as the DP standard section.
This information is exchanged between the CP 541 and the DP master. You
do not normally require this information.
Table 6-8
Structure of Station Status 1 (Byte 0)
Bit
Value
0
1
The CP 541 cannot be addressed.
1
1
The CP 541 is not yet ready to exchange data.
2
1
The configuration data sent by the DP master do not agree
with the specifications in DB1.
3
1
There is a slave diagnosis.
4
1
Requested function is not supported by the CP 541.
5
1
An implausible reply has been received from the CP 541.
6
1
There is an incorrect parameter assignment message.
7
1
The CP 541 has been assigned parameters by a different
DP master from the one now attempting access to the
CP 541.
Table 6-9
Structure of Station Status 2 (Byte 1)
Bit
Value
0
1
The CP 541 must be assigned new parameters.
1
1
There is a static diagnosis.
2
1
Set to 1
3
1
Response monitoring has been activated.
4
0
Always with CP 541
The FREEZE mode cannot be switched on.
5
0
Always with CP 541
The SYNC mode cannot be switched on.
6
0
Set to 0
7
0
The CP 541 has been deactivated.
Station status 3 (byte 2) is reserved for later applications. With the CP 541 it
always has the value 00
.
H
Content
Content
Communications Processor CP 541
EWA 4NEB 812 6188-02
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