在PCS7中，我想把变量从Step7传送到WinCC，选择编译OS后，但总会弹出对话框，说
No DM variable can be created for a symbol without a name
Please assign a mame for this symbol and restart the compilation.
并在记录中有
SIMATIC AS-OS-Engineering V6.0 + SP1
Copyright ?SIEMENS AG 1995-2003. All Rights Reserved.

Compilation log
===============

S7 project name: HXZF0210
S7 project path: F:\Hxzf0210\Hxzf0210.s7p
Scope of compilation: Entire OS with memory reset
Date of compilation: Sunday, February 19, 2006 8:39:20 AM

Options
-------

Variables and messages Yes
SFC Visualization No
Picture Tree Yes
Create / update block icons No


WinCC project paths
-------------------

OS F:\Hxzf0210\wincproj\OS\OS.mcp


Assignment list
---------------

Operator station S7 programs Subnet Subnet type WinCC unit Station Segment Rack Slot Address

OS S7 Program(1) PROFIBUS(1) PROFIBUS PROFIBUS 2 0 0 3



Data update (S7 Program(1))
---------------------------

Variable Name Type name Program Area Address Operator texts

CFC(4)/PID1 - - - - X -
CFC(4)/PID10 - - - - X -
CFC(4)/PID11 - - - - X -
CFC(4)/PID2 - - - - X -
CFC(4)/PID3 - - - - X -
CFC(4)/PID4 - - - - X -
CFC(4)/PID5 - - - - X -
CFC(4)/PID6 - - - - X -
CFC(4)/PID7 - - - - X -
CFC(4)/PID8 - - - - X -
CFC(4)/PID9 - - - - X -
*** Error(s) ***: No DM variable can be created for a symbol without a name. Please assign a name for this symbol and restart the compilation.

00 h 00 min 04 sec

请问这是什么原因造成的？非常感谢！！