
Appendix
A.2 System alarms
TP 270, OP 270, MP 270B (WinCC flexible)
A-22 Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
Number Effect/cause Remedy
280003 A connection is used which requires a function
module in the PLC.
The function block has not replied.
Check if:
• The cable is plugged in
• The PLC is OK
• The correct interface is used.
Reboot the system if the system alarm is displayed
continuously.
The remedy depends on the error code:
1: The function block must set the COM bit in the
response container.
2: The function block must not set the ERROR bit in the
response container.
3: The function block must respond within the specified
time (timeout).
4: Establish an online connection to the controller.
280004 Connection to the PLC is interrupted. There is no
data exchange at present.
Check the connection parameters in WinCC flexible.
Check that the cable is plugged in, the PLC is operational
and the correct interface is used.
Reboot the system if the system alarm is displayed
continuously.
290000 The recipe tag could not be read or written to. It is
assigned the start value.
The alarm can be entered in the alarm buffer for up
to four more failed tags, if necessary. After that, the
alarm number 290003 is issued.
Check in the configuration that the address has been set
up in the PLC.
290001 An attempt has been made to assign a value to a
recipe tag which is outside the value range
permitted for this type.
The alarm can be entered in the alarm buffer for up
to four more failed tags, if necessary. After that, the
alarm number 290004 is issued.
Note the value range for the tag type.
290002 It is not possible to convert a value from a source
format to a target format.
The alarm can be entered in the alarm buffer for up
to four more failed recipe tags, if necessary. After
that, the alarm number 290005 is issued.
Check the value range or type of the tag.
290003 This alarm is issued when alarm number 290000 is
triggered more than five times.
In this case, no further individual alarms are
generated.
Check in the configuration that the tag addresses have
been set up in the PLC.
290004 This alarm is issued when alarm number 290001 is
triggered more than five times.
In this case, no further individual alarms are
generated.
Note the value range for the tag type.
290005 This alarm is issued when alarm number 290002 is
triggered more than five times.
In this case, no further individual alarms are
generated.
Check the value range or type of the tag.
290006 The threshold values configured for the tag have
been violated by values entered.
Note the configured or current threshold value of the tag.
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