Interrupt, error, and system messages
4.3 Diagnostics with STEP 7
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
Manual, 03/2008, A5E01075975-02
49
Bit
Meaning
Cause/Remedy
6 1: The DP slave type does not match the software
configuration.
•
Has the correct station type been entered in the
configuration software?
7 1: Parameters have been assigned to the DP slave
by a different DP master (not the one that currently
has access to the DP slave).
•
The bit is always 1, for example, if you access the DP
slave with the programming device or another DP master.
•
The PROFIBUS address of the DP master that assigned
parameters to the DP slave is located in the "Master
PROFIBUS address" diagnostics byte.
Structure of station status 2 (byte 1)
Table 4- 4
Structure of station status 2 (byte 1)
Bit
Meaning
0
1: The DP slave parameters need to be reassigned.
1
1: A diagnostics message is pending. The DP slave will not operate until the problem is
eliminated (static diagnostics message).
2
1: The bit on the DP slave is always "1".
3
1: The watchdog is activated 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 disabled, that is, it has been removed from the processing in progress.
1
The bit is updated only if another diagnostics message changes also.
Structure of station status 3 (byte 2)
Table 4- 5
Structure of station status 3 (byte 2)
Bit
Meaning
0 to 6 0: Bits are always set to "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).
4.3.4
Master PROFIBUS address
Definition
The Master PROFIBUS address diagnostics byte contains the PROFIBUS address of the DP
master:
●
That assigned parameters to the DP slave
●
That has read and write access to the DP slave
The master PROFIBUS address is located in byte 3 of the slave diagnostics.
