Operating Instructions

Appendix C – Data File Specifications
Siemens Building Technologies, Inc. 43
Point Information
The following table describes the contents of lines that describe points.
For example, the line
POINT,group1\itemtag2,"Any Reference String",\\TREVOR-KIZIAK
\Matrikon.OPC.Simulation\Random.Int1,,VT_I1,,,,,,,,,,,VT_EMPTY,0,0,0,0,,NONE,,,,,,,,
defines an OPC Data Manager point named itemtag2, in unit group1. It will have its input side tied to
item Random.Int1 on the Matrikon.OPC.Simulation server on the computer TREVOR-KIZIAK, and
will accept values of type VT_I1. It has no output side and no dead value.
Table 10. Point Information Fields.
Position Field Description
1 “POINT”
2 Point name
3 Reference String information (user defined point description)
4 InputTag in the format of Host_Name\ProgID_of_OPC_Server\OPC_Item
5 OutputTag in the format of Host_Name\ProgID_of_OPC_Server\OPC_Item
6 Input data type. Must be one of the following: VT_I2, VT_I4, VT_R4, VT_R8, VT_CY,
VT_DATE, VT_BSTR, VT_BOOL, VT_I1, VT_UI1, VT_UI2, VT_UI4.
See the Variant Data Types
section.
7 Output data type. Must be one of the following: VT_I2, VT_I4, VT_R4, VT_R8, VT_CY,
VT_DATE, VT_BSTR, VT_BOOL, VT_I1, VT_UI1, VT_UI2, VT_UI4
. See the Variant Data Types
section.
8 Dead value flag:
0 = no dead value, 1 = use dead value
Fields 16 and 17 set the dead value.
9 Scaling flag:
0 = no scaling, 1 = scaling
Fields 18 to 21 set the scaling factor.
10 DDE flag:
0 or no value = invisible to DDE, 1 = tag visible by DDE
11 Quality flag
0 or no value = indicates that the quality is not written elsewhere,
1 = write quality to separate OPC Data Manager item
Use field 22 to specify the point.
12
Action flag – 1: perform action on write. Use fields 23 to 25 to specify the action. A value
of 0 or no value indicates that no action is to be performed on write.
13 Bidirectional flag – 0: unidirectional point, 1: bidirectional point
14 – 15
Reserved, must be blank
16 Dead value