Siemens SITRANS PCS 7 Function Manual page 803

(1) Display and switch the operating mode
This area provides information on the currently valid operating mode. The following operating
modes can be shown here:
● On (see the APL online help)
● Out of service (see the APL Online Help)
For more information on changing the operating mode, refer to the "Switching operating states
and operating modes" section in the APL Online Help.
(2) High and low scale range for the first process value (4 to 20 mA signal)
These values provide information on the display range for the bar graph of the process value
(4 to 20 mA signal). The scale range is set in the engineering system with the PV_OpScale
parameter, see Display and operating range for process values and limits.
(3) Display of first process value (4 to 20 mA signal) including signal status
This area indicates the current process value (4 to 20 mA signal) with the associated signal
status. The name of the configured measured value is displayed depending on the PV_Meas0
variable, in this case "Level".
(4) High and low scale range for the gradient value
These values provide information on the display range for the bar graph of the gradient. The
scale range corresponds to 10% of the scale range for the process value (4 to 20 mA signal):
If you have entered a scale range for the process value of 0 to 100, for example, the scale range
for the gradient is automatically defined as -10 to 10.
The current gradient value is displayed if one of the monitoring functions is enabled:
● Gradient monitoring for positive changes (GradHUpEn = 1)
● Gradient monitoring for negative changes (GradHDnEn = 1)
● Gradient monitoring (GradLEn = 1)
(5) Display of gradient
This area shows the current, minimum and maximum gradient values of the 4 to 20 mA signal
as well as rising and falling of the value. This display of the minimum and maximum gradient
value functions like a slave pointer.
The current gradient value is displayed if one of the monitoring functions is enabled:
● Gradient monitoring for positive changes (GradHUpEn = 1)
● Gradient monitoring for negative changes (GradHDnEn = 1)
● Gradient monitoring (GradLEn = 1)
The maximum peak gradient value is displayed if the gradient monitoring function for positive
changes is enabled (GradHUpEn = 1)
SITRANS Library for PCS 7
Function Manual, 05/2019, A5E35351976-11
SITRANS LU HART
17.1 SitrLuHA
803