FX2N-5A Special function block Buffer Memory (BFM) 7
7-13
8: Voltmeter display mode (-100mV to + 100mV) (Display range -10000 to +10000)
9: Scaling function (-10 to +10 V) (maximum Display range -32768 to +32767); default = -
32640 to +32640
A:Scaling function Current input mode (-20 to +20 mA) (maximum Display range -32768 to
+32767); default = -32640 to +32640
B:Scaling function Voltage input mode (-100 to +100 mV) (maximum Display range -32768 to
+32767); default = -32640 to +32640
F: channel disabled, channel returns always 0.
C to E: not valid; the module will automatically restore the last valid setting.
The input characteristics such as offset and gain settings are automatically changed with the
settings of BFM 0. A mode change in BFM 0 will also affect the settings of BFM 41 to 44 (offset
data) and BFM 51 to 54 (gain data) or the settings of BFM 200 to 239 (Scaling function data).
Before changing offset/gain or Scaling data, the mode setting in BFM 0 must be set, otherwise,
offset/gain or Scaling function data will be overwritten by the default data of the selected mode.
Scale over status (BFM 28) that were existing before a mode change will not automatically be
cleared by performing a mode change.
Disabling a channel will increase the scanning frequency of the other channels.
The default value of BFM 0 is H0000.
The value of BFM 0 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 0.
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