APG MPX-E, User Manual

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40424 - 2nd Float Offset
Used to calibrate bottom float reading (-10,364 - 10,364 mm). Differences in fluid specific gravity can change
the level at which a float rests in the liquid. Use this parameter to match probe reading to confirmed liquid
level.
40423 - 1st Float Offset
Used to calibrate top float reading (-10,364 - 10,364 mm). Differences in fluid specific gravity can change the
level at which a float rests in the liquid. Use this parameter to match probe reading to confirmed liquid level.
40425 - Gain Offset (Factory Calibrated)
Used to move the centerline of the float response signal to optimize signal strength (0 - 255).
• APG Modbus Register Lists for MPX-E/R2 and MPX-E/R3
Input Registers (0x04)
Register Returned Data
30299 Model Type
30300 Top Distance (raw float reading, in mm, unsigned)
30301 Bottom Distance (raw float reading, in mm, unsigned)
30302 Temperature Reading (in
0
C, signed)
30303-30304 Top Calculated (level, volume, etc., in selected Units)
30305-30306 Bottom Calculated (level, volume, etc., in selected Units)
30307 Version

NOTE : Input Register values for MPX-E/R2 and MPX-E/R3 are only visible while pro-
gramming via the RST-4100.

NOTE : Input Registers 30300 and 30301 also display Loss of Signal error codes. See
Fail Safe (Holding Register 40411).