User manual

Using SIMATIC PCS 7 OSx @aGlance1-16
SIMATIC PCS 7 OSx 4.1.1 @aGlance
Using the SIMATIC PCS 7 OSx @aGlance Functions (continued)
To write a list or a table of tag:attribute data values, you must first be
logged in with your client login. Your client must provide the server with the
following parameters.
 Server Name — the prefix osx must appear in front of the OSx station
name.
 Tag Names — designate the tags you are writing.
 Attribute Names — designate the attributes you are writing. Write
data only to attributes of process I/O tag types, (for example, DO,
LOOP, or AI). The process I/O tag types are described in the chapter on
defining tags in the SIMATIC PCS 7 OSx Process Configuration
Manual.
Because Excel and Lotus 1-2-3 convert all integer values to floating
point values, you can only write floating point data. This means that
you cannot write integer or bit values to attributes of selected OSx tags
from these applications; a data type mismatch would occur. Refer to the
chapter on defining tags in the SIMATIC PCS 7 OSx Process
Configuration Manual for valid attributes. You can only write to
attributes having a domain of FLOAT32, STRING, or CISTRING.
!
WARNING
Writing data to tags other than process I/O tags may result in database values
that could cause unpredictable operation by the controller.
Unpredictable operation by the controller can cause death or serious injury to
personnel and/or damage to equipment.
When you write data, write only to one of the process I/O tags.
Writing Tag Values