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FX2N-8AD Analog input block Buffer Memory (BFM) 8
8-13
8.2 Details of buffer memories
8.2.1 BFM #0, #1: Specifies input mode.
Specify the input mode of CH1 to CH4 by writing a numeric value to BFM #0. Specify the input
mode of CH5 to CH8 by writing a numeric value to BFM #1.
In the input mode specification, each BFM is expressed in a 4-digit hexadecimal code, and
each channel No. is assigned to each digit. Specify a numeric value 0 to F in each digit for
each channel.
¡=0: Voltage input mode (-10 to +10 V), resolution 0.63 mV (20 V x 1/32,000)
¡=1: Voltage input mode (-10 to +10 V), resolution 2.50 mV (20 V x 1/8,000)
¡=2: Voltage input mode, analog value direct display (-10,000 to +10,000), resolution 1 mV
¡=3: Current input mode (4 to 20 mA), resolution 2.00
µ
A (16 mA x 1/8,000)
¡=4: Current input mode (4 to 20 mA), resolution 4.00
µ
A (16 mA x 1/4,000)
¡=5: Current input mode, analog value direct display (4,000 to 20,000), resolution 2.00
µ
A
¡=6: Current input mode (-20 to +20 mA), resolution 2.50
µ
A (40 mA x 1/16,000)
¡=7: Current input mode (-20 to +20 mA), resolution 5.00
µ
A (40 mA x 1/8,000)
BFM#0
H¡¡¡¡
CH1
CH2
CH3
CH4
BFM#1
H¡¡¡¡
CH5
CH6
CH7
CH8