Siemens SIMATIC ET 200AL System Manual page 180

5.3.3 Station statuses 1 to 3
The following tables show station status 1 to 3 and provide an overview of the status of a DP
slave.
Structure of station status 1 (byte 0)
Table 5- 5
Interface module IM 157-1 DP (6ES7157-1AA00-0AB0)
Manual, 12/2016, A5E32100641-AD
Structure of station status 1 (byte 0)
Bit
0 1: The DP slave is not responding to the DP
master.
1 1: The DP slave is not yet ready to ex-
change data.
2 1: The configuration data transferred from
the DP master to the DP slave does not
match the DP slave configuration.
3 1: External diagnostics is available. (Group
diagnostics display)
4 1: The requested function is not supported
by the DP slave (e.g. changing the
PROFIBUS address using software).
5 1: The DP master cannot interpret the re-
sponse of the DP slave.
6 1: The DP slave type does not match the
software configuration.
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).
Interrupts, error messages, diagnostics and system alarms
Meaning Cause/Solution
Correct PROFIBUS address set on the
•
DP slave?
Bus connector connected?
•
Is the DP slave connected to the voltage
•
supply?
RS485 repeater properly configured?
•
Wait; the DP slave is currently starting
•
up.
Has the correct station type or the cor-
•
rect DP slave configuration been en-
tered in the configuration software?
Evaluate the ID-specific diagnostics, the
•
module status, and/or the channel diag-
nostics. As soon as all errors have been
eliminated, bit 3 is reset. The bit is set
again when there is a new diagnostics
alarm in the bytes of the aforementioned
diagnostics.
Check the configuration.
•
Check the bus configuration.
•
Has the correct station type been en-
•
tered in the configuration software?
The bit is always 1, for example, if you
•
access the DP slave with the program-
ming device or another DP master.
The PROFIBUS address of the DP mas-
•
ter that assigned parameters to the DP
slave is located in the "Master
PROFIBUS address" diagnostics byte.
5.3 Alarms
37