Siemens SIMATIC VS120 Operating Instructions Manual page 156

Alarm, error and system messages
11.2 Error messages and error handling
Occurrence of PROFIBUS DP or PROFINET IO errors
If a "PROFIBUS DP Error" or "PROFINET IO Error" occurs, the processing unit checks
during the time the error is displayed if the cause of the error continues to be present.
When the relevant communication is reestablished, the processing unit resets the error
display.
In any case, you can acknowledge the error manually (on the processing unit or in the
adjustment support) and thereby make changes to the configuration.
The occurrence of these two errors as well as their automatic acknowledgment are
permanently saved in the diagnostics records, in other words, the corresponding entries are
not overwritten by new errors. They are indicated at the following locations if their number
deviates from zero:
• In the Info menu of the VS120 processing unit
• In the adjustment support for the "Processing" job
• In the adjustment support for the "Info" job in the "Statistics" tab
Warnings/instructions as LCD displays on the processing unit
No.
1
2
3
4
11-6
Note
The occurrence of a PROFIBUS DP Error or PROFINET IO Error results in an OB86 call
(rack failure) in a SIMATIC S7-CPU.
If you have not programmed OB86, the CPU goes to STOP.
Message Description
PROFIBUS When setting Control, OK/N_OK, Output
Connection or Trigger on PROFIBUS DP, no
failed connection could be established.
The setting is adopted when the message
is acknowledged with OK. The settings
are not applied if you acknowledge with
ESC.
Permission The security settings prevent this value
denied for ... being set in the menu of the processing
unit.
Restart to A device name change on PROFINET IO
Activate only becomes active after restarting the
processing unit.
TCP/IP During the self-test, the system waits for
Esc:Skip the activation of the TCP/IP connections
(if applicable when obtaining the IP
address from the DHCP server).
Remedies
You must correct the PROFIBUS
DP parameters or activate the
communication partner.
Set the value over the Web user
interface or change the security
settings over the Web user
interface.
Turn the power supply for the
processing unit off and on again.
If the message does not disappear
automatically after a few seconds,
check the network connection.
With ESC, you can skip connection
establishment (or it continues in
the background).
Vision Sensor SIMATIC VS120
Operating Instructions, Edition 02/2006, A5E00757507-01