Bfm#5 To 8] Measured Value (Pv) - Mitsubishi Electric MELSEC FX Series User Manual

FX -4LC User's Manual
3U
8.2.3

[BFM#5 to 8] Measured value (PV)

These buffer memories store the measured value (PV).
The unit is " C", "0.1 C", " F", "0.1 F" or "mV" in accordance with the input type setting.
The displayed measured value (PV) is as follows depending on the input type used.
• When internal input is used
1) These buffer memories store the input value detected by the 4LC subject to the following processing.
- Sensor correction
- Primary delay digital filter setting
2) These buffer memories store the following value in accordance with the decimal point position.
- When the decimal point position is "0", these buffer memories store the measured value as it is.
- When the decimal point position is "1", these buffer memories store the measured value multiplied by
"10".
• When external input is used
1) These buffer memories store the value written in the external input value buffer memory subject to the
following processing.
- Sensor correction
- Primary delay digital filter setting
BFM No.
CH1 CH2 CH3 CH4
#5 #6 #7
Caution
• When handing a numeric value containing decimal places, these buffer memories store the actual value
multiplied by "10".
• "0" is displayed due to measurement data sampling for approximately 5 seconds after the power is turned
ON.
The 4LC does not perform control during this period.
→ For details on the decimal point position, refer to Subsection 8.2.2.
→ For details on the sensor correction, refer to Subsection 8.2.32.
→ For details on the primary delay digital filter setting, refer to Subsection 8.2.36.
Display range :
• When internal temperature input is given:
"Input range lower limit - 5% of span" to "Input range upper limit +
5% of span"
• When internal micro voltage input is given:
#8
"Scaling lower limit - 5% of span" to "Scaling upper limit + 5% of
span"
• When external temperature input is given.
"External input range lower limit - 5% of span" to "External input
range upper limit + 5% of span"
→ For details on the input type, refer to Subsection 8.2.52.
Description
8 Buffer Memory
8.2 Buffer Memory Details
Initial
R/W Backup
value
- R -
79
1
2
3
4
5
6
7
8
9
10