The following DAQ tags allow users to change the run-time Datalog Trend definition in View/ViewDAQ using Keymacros and scripts. Please use SETVAL to the following DaqTags to make changes to Data Log Trend Displays.
%TDTRDCGN: Datalog Trend Group Number (See note below on %TDTRDCGN).
%TDTRDCGD was added to allow users to change the description of a Datalog Trend Group which is defined by %TDTRDCGN. Please note that the change is local to ViewDAQ/View client and will not be written back to Database.
%ADTRDDT(: Datalog Trend Data Type, range is 0 to 3
%ADTRDH: Datalog Trend Tag Highlighted, range is 0 to 11
%ADTRDST: Datalog Trend Span Type, range is 0 to 23
%ADTRDXP: Datalog Trend X Tag Pos for XYPLOT, range is 0 to 11
%DDTRDON(: Datalog Trend Group Tag On/Off, 1 is on and 0 is off
%TDTRD1(: Datalog Trend Tagname
%TDTRD4(: Datalog Trend Display Low
%TDTRD5(: Datalog Trend Display High
To change the run-time definition of trend group 111 (see note below on %TDTRDCGN),
To set the initial highlighted position to the 2nd tag for trend group 111,
To set the X tag position of XYPLOT to the 6th tag for trend group 111,
To set the display span to 24-hour for trend group 111,
To set the data type to minimum for the 7th tag for trend group 111,
To turn off trend display for the 1st tag for trend group 111,
To add/replace tag name as abc for the 3rd tag for trend group 111,
To set display low to -1000.0 for the 12th tag for trend group 111,
To set display high to 1000.0 for the 9th tag for trend group 111,
The following examples illustrate the syntax used in scripts.
To change the run-time definition of trend group 234,
SETVAL %TDTRDCGN =234
Please note that the value of %TDTRDCGN is always set to the current trend group number when Datalog TREND/XYPLOT is displayed. Any SETVAL to %TDTRDCGN will be ignored. That means the change of the run-time definition can only be made to current trend group if it is performed inside Datalog TREND/XYPLOT display.s: