Security Command R500 Spécifications Page 144

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8 – Configuring Points
126 R400
Analog Point Parameters
An analog point can represent the following different types of field values:
Process Variable (PV)
•Output (OP)
Mode (MD)
Setpoint (SP)
Up to four auxiliary values (A1, A2, A3, A4)
Analog points represent continuous values such as pressures or temperatures.
Figure 8.4, “Analog Point Used to Represent a Temperature” on page 126 shows
the relationship between a field value and an analog point.
Analog Point Process Variable (PV)
The PV of an analog point represents the current “reading” (represented in
engineering units) of the field device or process. PVs are often used to represent
the process variable of a control loop.
Figure 8.4 Analog Point Used to Represent a Temperature
SP
PV
OP
MD
PID
SP PV OP MD
Pump
Valve
Flow Sensor
Server (Station Display) Controller Plant Equipment
plscpcg.book Page 126 Monday, May 28, 2001 10:11 AM
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