Structure of station status 2 (byte 1)
Table 5- 6
Bit
0
1
2
3
4
5
6
7
The bit is updated only if another diagnostics alarm also changes.
1
Structure of station status 3 (byte 2)
Table 5- 7
Bit
0 to 6
7
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.
5.3.5
Manufacturer ID
The manufacturer ID contains a code specifying the type of the DP slave.
The following table shows the structure of the manufacturer ID (bytes 4, 5).
Table 5- 8
Byte 4
81
H
IM 157-1 DP (6ES7157-1AA00-0AB0)
Equipment Manual, 08/2021, A5E32100641-AE
Structure of station status 2 (byte 1)
1: The DP slave parameters need to be reassigned.
1: A diagnostics alarm is pending. The DP slave will not operate until the problem is elim-
inated (static diagnostics alarm).
1: The bit on the DP slave is always "1".
1: The watchdog is activated for this DP slave.
1: The DP slave has received the control command "FREEZE".
1: The DP slave has received the control command "SYNC".
0: Bit is always "0".
1: The DP slave is disabled, that is, it has been removed from the processing in progress.
Structure of station status 3 (byte 2)
0: Bits are always set to "0".
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.
Description of the manufacturer ID
Byte 5
Manufacturer ID
A9
IM 157-1 DP interface module
H
Interrupts, error messages, diagnostics and system alarms
Meaning
Meaning
5.3 Alarms
1
1
37
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