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FX2N-5A Special function block Buffer Memory (BFM) 7
7-41
7.2.27 BFM 71 to BFM 74 Lower limit, alarm set value (READ/WRITE)
7.2.28 BFM 81 to BFM 84 Upper limit, alarm set value (READ/WRITE)
The upper/lower limit value of the alarm detection function (BFM 22 b0, b1) is written to the
lower limit value of each channel from BFM 71 to BFM 74 and the upper limit value of each
channel from BFM 81 to BFM 84.
The values of BFM 71 to 74 and BFM 81 to 84 are stored non-volatile in the internal EEPROM.
There is a safety function to protect the internal EEPROM from being destroyed by
accidentally writing the same value continuously to a BFM.
The range of setting is different according to setting the input mode.
Please write a set value in a digital value.
Input mode (BFM#0) Range of setting
0: Voltage input mode -32000 to +32000
1: Current input mode 0 to 32000
2: Current input mode -32000 to +32000
3: Voltage input mode -32000 to +32000
4: Voltage input mode -2000 to +2000
5: Voltmeter display mode -10000 to +10000
6: Amperemeter display mode 2000 to 20000
7: Amperemeter display mode -20000 to +20000
8: Voltmeter display mode -10000 to +10000
9: Scaling function voltage input mode -32768 to +32767