Bfm #26: Upper/Lower Limit Value Error Status - Mitsubishi Electric FX2N-8AD User Manual

FX2N-8AD Analog input block
8.2.9

BFM #26: Upper/lower limit value error status

When you use the upper/lower limit value detection function (BFM #22 b1), the detection result
is written to BFM #26.
The lower limit value error or the upper limit value error of each channel is assigned to each bit
of BFM #26. When the data (BFM #10 to BFM #17) of each channel is outside the range from
the lower limit value error set value (BFM #71 to BFM #78) to the upper limit value error set
value (BFM #81 to BFM #88), the corresponding bit turns ON.
Once a bit turns ON, it remains ON until it is reset by BFM #99 or the power is turned off.
Even while an upper/lower limit value error is detected, the data (BFM #10 to BFM #17) of
each channel is continuously updated.
Table 8.2: Bit assignment in BFM #26
Bit Channel
No. No.
b0
CH1
b1
b2
CH2
b3
b4
CH3
b5
b6
CH4
b7
Description
Lower limit value error
Upper limit value error
Lower limit value error
Upper limit value error
Lower limit value error
Upper limit value error
Lower limit value error
Upper limit value error
Bit Channel
No. No.
b8 Lower limit value error
CH5
b9 Upper limit value error
b10 Lower limit value error
CH6
b11 Upper limit value error
b12 Lower limit value error
CH7
b13 Upper limit value error
b14 Lower limit value error
CH8
b15 Upper limit value error
Buffer Memory (BFM) 8
Description
8-21