Interrupt, error, and system messages
4.3 Diagnostics with STEP 7
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
48 Manual, 03/2008, A5E01075975-02
Note
The length of the diagnostics frame varies:
• With the IM151-1 HIGH FEATURE (depending on the parameter assignment)
– Between 6 and 62 bytes in DPV0 mode
– Between 6 and 128 bytes in DPV1 mode
You can identify the length of the last received diagnostics frame in
STEP 7
by referring to
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 Meaning Cause/Remedy
0 1: The DP slave cannot be accessed by the DP
master.
• 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?
1 1: The DP slave is not yet ready to exchange data.
• Wait, the DP slave is currently starting up.
2 1: The configuration data transferred from the DP
master to the DP slave does not match the slave
configuration.
• Has the correct station type or the correct DP slave
configuration been entered in the configuration software?
3 1: External diagnostics information is pending.
(Group diagnostics display)
• 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.
4 1: The required function is not supported by the DP
slave (for example, changing the PROFIBUS
address by means of software).
• Check the configuration.
5 1: The DP master cannot interpret the response of
the DP slave.
• Check the bus configuration.
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