Siemens SITRANS PCS 7 Function Manual page 37

Configuration of the trend view
The trend view can be configured so that archive values are displayed immediately after
opening. A prerequisite for this is that archive variables exist. Proceed as follows:
● A "1" is attached at the block icon in the "TrendPictureName" property. A semicolon is used
as the separator to the name of the trend view.
Example: @pg_apl_trendPID_Statistic.pdl;1
Special considerations for controllers
You can select two different representations for the display area:
1. Detailed display (default setting):
Display area consisting of three coordinate systems:
● Setpoint trend, actual value trend;
● Manipulated variable, control performance index trend;
● Binary trend via automatic/manual, manipulated variable at high or low limit
Open the scatterplot diagram with the user button (number 2) in the toolbar. It shows a
coordinate system with the process value on the value axis and the manipulated variable or
position feedback on the X axis. A new value pair is entered into the coordinate system with
each cycle.
If you want to use the detail display, you need to enter the following in the block icon under
Trends in the WinCC Graphics Designer:
TrendPictureName = @pg_apl_trendPID_Statistic.pdl
2. Simple display:
Display area consisting of two coordinate systems:
● Setpoint trend, actual value trend;
● Manipulated variable;
If you want to use the simple display, you need to enter the following in the block icon under
Trends in the WinCC Graphics Designer:
TrendPictureName =@pg_apl_trendPID.pdl
Notes on step controllers with position feedback:
If you use a step controller with position feedback as the controller type, you need to enter the
following in the block icon under Trends in the WinCC Graphics Designer:
TrendConfiguration5 = *.MV#Value;...
TrendConfiguration6 = .RbkOut#Value;...
The following applies to all other controller types (default setting):
TrendConfiguration5 = .MV#Value;...
TrendConfiguration6 = *.RbkOut#Value;...
SITRANS Library for PCS 7
Function Manual, 05/2019, A5E35351976-11
Functions of the faceplates
2.4 Trend view
37