Siemens SIMATIC ET 200AL System Manual page 181

Interrupts, error messages, diagnostics and system alarms
5.3 Alarms
Structure of station status 2 (byte 1)
Table 5- 6
The bit is updated only if another diagnostics alarm also changes.
1
Structure of station status 3 (byte 2)
Table 5- 7
0 to 6
5.3.4 Master PROFIBUS address
The following is stored in the diagnostic byte Master PROFIBUS address:
● The PROFIBUS address of the DP master that assigned the parameters to the DP slave.
● The PROFIBUS address of the DP master that has read and write access to the DP
slave.
The master PROFIBUS address is found in byte 3 of the slave diagnostics.
38
Structure of station status 2 (byte 1)
Bit
0 1: The DP slave parameters need to be reassigned.
1 1: A diagnostics alarm is pending. The DP slave will not operate until the problem is
eliminated (static diagnostics alarm).
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 control command "FREEZE".
5 1: The DP slave has received the control command "SYNC".
6 0: Bit is always "0".
7 1: The DP slave is disabled, that is, it has been removed from the processing in pro-
gress.
Structure of station status 3 (byte 2)
Bit
0: Bits are always set to "0".
7 1: •
There are more diagnostic alarms pending than the DP slave is able to store.
The DP master cannot enter all the diagnostics alarms sent by the DP slave in its
•
(channel) diagnostics buffer.
Meaning
1
1
Meaning
Interface module IM 157-1 DP (6ES7157-1AA00-0AB0)
Manual, 12/2016, A5E32100641-AD