Bfm #1 (Ch1) And Bfm #2 (Ch2): Event - Mitsubishi Electric MELSEC FX2N-2LC User Manual

FX2N-2LC Temperature Control Block
7.2.2

BFM #1 (CH1) and BFM #2 (CH2): Event

BFM #1 corresponds to CH1. BFM #2 corresponds to CH2. Assignment is equivalent
between BFM #1 and BFM #2.
Table 7.3:
Bit No.
b0 Input error (upper limit)
b1 Input error (lower limit)
Cold contact temperature com-
b2
pensation data error
b3 A/D converted value error
b4 Alarm 1
b5 Alarm 2
b6 Alarm 3
b7 Alarm 4
b8 Loop breaking alarm
b9 Heater disconnection alarm
b10 Heater meltdown alarm
b11 Not used
Decimal point position
b12 (0: Unit = 1°C/°F, 1: Unit = 0.
1°C/°F)
Manual mode transition com-
b13
pleted
AT (auto tuning) being per-
b14
formed
Temperature rise completed
b15
status
Assignment
Turns on when input value is over scale.
Turns on when input value is under scale.
Turns on when an error has been caused by noise or when
a failure has occurred in FX
If contents of error are not eliminated even after power is
turned off once then on again, contact Mitsubishi Electric
System Service.
Turns on when an alarm has occurred.
Turns on when an alarm has occurred.
Turns on when an alarm has occurred.
Turns on when an alarm has occurred.
Turns on when a loop breaking alarm has occurred
Turns on when a heater disconnection alarm has occurred.
Turns on when a heater meltdown alarm has occurred.
Turns on when input range is set to "0. 1°C/°F".
Turns on when transition to manual mode is completed.
Only while b13 is ON, manual output set value can be writ-
ten.
Remains ON while auto tuning is being performed.
Turns on after soak time (BFM #80) is finished within tem-
perature rise completion range (BFM #79).
Buffer Memory (BFM) 7
Description
-2LC.
2N
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