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FX2N-2LC Temperature Control Block
7.2
Details of buffer memories
7.2.1
BFM #0: Flag
Table 7.2:
Bit No.
b0
Error present
b1
Set value range error
b2
24 VDC power supply error
b3
Set value backup error
b4
Not used
b5
Not used
b6
Not used
b7
Not used
Sum check error for adjustment
b8
data error
Cold contact temperature com-
b9
pensation data error
b10
A/D converted value error
b11
Not used
b12
Controlling flag
b13
Set value being backed up
b14
Initialization completion flag
b15
Temperature control ready flag Turns on when FX
Operation of b15 (Temperature control ready flag)
Temperature control ready flag
Power is turned on.
It takes 500 ms
maximum.
Description on operation
1) When the power is turned on and initialization of the temperature control CPU is com-
pleted, the temperature control ready flag turns on.
2) While the temperature control ready flag is ON, the FX
Description
Initialization of temperature
control CPU is completed.
Turns on when an error among b1 to b10 below has
occurred.
Turns on when data outside set range is written.
Turns on when driving power supply (24 VDC) is not sup-
plied.
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 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 FX
-2LC is performing control.
2N
Remains ON while set values are being backed up.
Refer to 7.2.42.
Turns on when initialization is completed.
-2LC becomes ready for operation.
2N
Buffer Memory (BFM) 7
Operation
-2LC.
2N
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-2LC.
2N
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-2LC accepts TO instructions.
2N
7-4
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