Instruction Manual

3-6
IM WX1-04E
Adding Items to Groups
You can add an item to a group. GateOPC limits the number of characters to 32.
However, fewer than 32 may be allowed depending on the OPC server.
Note
These settings correspond to the OPC server settings and define GateOPC acquisition items.
An item may not be able to be added depending on its type. Data for each OPC DA item
are of the VARIANT type, but whether or not addition of items to that type and group is
allowed is as follows:
Data Type Description Group Add Allowed/Not Allowed
([YES]: Allowed, [NO]: Not Allowed)
VT_I2 Single precision integer YES
VT_I4 Double precision integer YES (or SHORT and LONG?)
VT_UI2 Single precision integer, no symbols YES
VT_UI4 Double precision integer, no symbols YES
VT_INT Integer YES
VT_UINT Integer, no symbols YES
VT_R4 Single precision floating point number YES
VT_R8 Double precision floating point number YES
VT_DATE Day and time from 1899/12/30 NO
VT_BSTR Character string NO
VT_BOOL 0:FALSE –1:TRUE YES
Other NO
Setting Item Properties
You can specify the upper and lower limit of span, tag name (up to 16 characters), unit (up
to 6 characters), decimal place (0 to 4), and color for each item registered to groups.
Note
These settings do not involve the OPC server; they are used when sending data from GateOPC
to DAQLOGGER or Remote Monitor.
Colors are ignored by DAQLOGGER and Remote Monitor. Also, you can download tag names
using tag setting software.
A decimal place is defined as a significant digit behind the decimal point. The following is
an example of decimal place and data.
Actual data Decimal places: 0 Decimal places: 1 Decimal places: 2 Decimal places: 3 Decimal places: 4
0.12345 0 0.1 0.12 0.123 0.1234
3.2 Detailed Description of Functions