Siemens SIMATIC IM151-1 Manual page 48

Interrupt, error, and system messages
4.3 Diagnostics with STEP 7
Note
The length of the diagnostics frame varies:
• With the IM151-1 HIGH FEATURE (depending on the parameter assignment)
You can identify the length of the last received diagnostics frame in
the RET_VAL parameter of the SFC 13.
4.3.3 Station statuses 1 to 3
Definition
Station statuses 1 to 3 provide an overview of the status of a DP slave.
Structure of station status 1 (byte 0)
Table 4- 3 Structure of station status 1 (byte 0)
Bit
0 1: The DP slave cannot be accessed by the DP
master.
1 1: The DP slave is not yet ready to exchange data.
2 1: The configuration data transferred from the DP
master to the DP slave does not match the slave
configuration.
3 1: External diagnostics information is pending.
(Group diagnostics display)
4 1: The required function is not supported by the DP
slave (for example, changing the PROFIBUS
address by means of software).
5 1: The DP master cannot interpret the response of
the DP slave.
48
– Between 6 and 62 bytes in DPV0 mode
– Between 6 and 128 bytes in DPV1 mode
Meaning Cause/Remedy
Is the correct PROFIBUS address set on the DP slave?
•
Is the bus connector plugged in?
•
Is the DP slave connected to the voltage supply?
•
Is the RS-485 repeater set correctly?
•
Has the DP slave been reset?
•
Wait, the DP slave is currently starting up.
•
Has the correct station type or the correct DP slave
•
configuration been entered in the configuration software?
Evaluate the ID-specific diagnostics information, the
•
module status, and/or the channel-specific diagnostics
information. As soon as all errors have been eliminated,
bit 3 will be reset. The bit will be set again when there is a
new diagnostics message in the bytes of the
aforementioned diagnostics.
Check the configuration.
•
Check the bus configuration.
•
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
STEP 7
by referring to
Manual, 03/2008, A5E01075975-02