Siemens SIMATIC IM151-1 STANDARD User Manual

Interrupt, error, and system messages
4.4 Diagnostics with STEP 7
Interface module IM151-1 STANDARD (6ES7151-1AA06-0AB0)
44 Manual, 07/2015, A5E01075950-AD
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).
4.4.4
68B
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.

Siemens SIMATIC IM151-1 STANDARD Specifications

General

Brand	Siemens
Model	SIMATIC IM151-1 STANDARD
Category	Control Unit
Language	English