User`s guide

60 Wonderware Siemens SIMATIC NET S7 I/O Server
Special Wonderware Logger Messages
The following messages may appear in the Wonderware Logger. They can be very
useful in debugging communication problems.
Ø The following logger messages can occur in error situations if log errors (default) is
selected in the logger settings.
• ERROR: poking item: <item name>(<topic name>)
Writing a value to an item failed.
• POKE: invalid value, clamp at high limit for item: <item name> on <topic
name>
• POKE: invalid value, clamp at low limit for item: <item name> on <topic
name>
An invalid value has been specified for poking data. Value is clamped and transfered to
the PLC.
• POKE ERROR: invalid value, cannot convert for item : <item name> on
<topic name>
An invalid value has been specified for poking data. Value cannot be converted and
write operation is aborted. After all write operations are completed the "writecomplete"
item will go to -1.
• Error invalid topic name: <topic name>
Topic name does not exist. Change topic name or configure correct topic.
• Invalid item name: <item name> (<topic name>)
Item name does not exist. Check for correct item name.
• Write complete (ERROR) – item: <item name> on <topic name>
A write operation has failed on item with <item name>.
• New status (<topic name>): 0 (ERROR)
Connection to PLC has gone bad.
• ERROR: Cannot load S732.DLL
There’s no SIMATIC NET component for S7 installed on your PC. The needed
dynamic link library was not found.
• ERROR: Block services not available in this version of the SIMATIC NET
driver
Block services are not available because they are not supported under this version of
your SIMATIC NET component.
• ERROR(<errorlevel>): s7_init (CP=<CP-name>,VFD=<VFD-name>