Bfm #81: Ct Monitor Method Changeover; Bfm #82: Set Value Range Error Address - Mitsubishi Electric MELSEC FX2N-2LC User Manual

FX2N-2LC Temperature Control Block
7.2.40

BFM #81: CT monitor method changeover

In BFM #81, change over the CT monitor method. This setting is applied to both CH1 and CH2.
The current is detected by sampling performed every second.
While the temperature is controlled, the control output repeatedly turns on and off. Accord-
ingly, the current in the ON time (= ON current) and the current in the OFF time (= OFF current)
are alternately displayed. If the output cycle is short, the displayed value is not stable and is
difficult to read.
To cope with this, the display (monitor) method can be selected.
When BFM #81 is set to "K0 (initial value)", the ON current and the OFF current are alternately
displayed.
When BFM #81 is set to "K1", only the ON current is displayed. Even in the OFF time, the ON
current remains displayed.
When control is stopped, the OFF current is displayed without regard to the setting of BFM
#81.
7.2.41

BFM #82: Set value range error address

When an out-of-range error occurs in the set value written to each BFM, BFM #82 indicates
the BFM No. in which the error occurs.
While no error occurs, BFM #82 stores "0".
When an error occurs, BFM #82 stores the BFM No. in which the error occurs. Check the set
range, set a proper value for the corresponding BFM, then reset the error (BFM #10).
Buffer Memory (BFM) 7
7-28