Analog Output Scaling - Siemens SITRANS LR560 Operating Instructions Manual

2.6. Analog Output Scaling

2.6.1. Current Output Function
Notes:
• Level, space, and distance have different reference points.
• Use caution when changing Current Output Function while the device is
connected to a HART network. Current Output Function controls the
primary value. Changes to Current Output Function will update the mA
Setpoints.
• Current Output Function also affects the secondary, tertiary and
quaternary variables in a HART network.
Can be set to either Level, Space, or Distance.
sensor
ref.
pt.
high
cal.
pt.
low
cal.
pt.
Options
Level
Space
* Distance
Related
Parameters
To view the mA reading in the secondary region of the LCD, press
handheld programmer.
To modify Current Output Function via SIMATIC PDM:
• Open the menu Device – Select Analog Output.
Page 92 SITRANS LR560 (mA/HART) – OPERATING INSTRUCTIONS
20 mA
100%
Level
4 mA
0%
Reference point
Low Calibration Point
High Calibration Point
sensor reference point
Units (2.2.1.)
4 mA Setpoint (2.6.2.)/20 mA Setpoint (2.6.3.)
Low Calibration Pt. (2.3.1.)/High Calibration Pt. (2.3.2.)
4 mA
0%
Space
20 mA
100%
Description
measured as a percentage of the
difference between High Calibration
Point and Low Calibration Point
measured as a percentage of Low
Calibration Point
4 mA
0%
Distance
20 mA
100%
on the
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