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FX2N-5A Special function block Buffer Memory (BFM) 7
7-37
7.2.21 BFM 30 Model ID code (READ only)
BFM 30 stores the fixed value K1010.
Write attempts by TO instruction are ignored.
7.2.22 BFM 31 to BFM 40 reserved
7.2.23 BFM 41 to BFM 44 Analog input Offset data (READ/WRITE)
Input Offset data: Analog input value when the digital value is "0".
For default values and setting ranges, see table below (BFM 51 to BFM 54).
The values of BFM 41 to 44 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.
7.2.24 BFM 45 Analog output Offset data (READ/WRITE)
Output Offset data: Analog output voltage or current if digital input in BFM 14 is 0.
Default offset value for voltage mode (-10V/+10V) is 0V(=K0), for current mode (4 - 20mA) is
4mA(=K4000) and for current mode (0 - 20mA) is 0mA(=K0).
The value of BFM 45 is 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 BFM 45.