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FX2N-2LC Temperature Control Block
7.2.3
BFM #3 (CH1) and BFM #4 (CH2): Measured value (PV)
BFM #3 stores the measured value of CH1. BFM #4 stores the measured value of CH2.
°
The unit is
C, 0.1
(BFM #70, BFM #71).
7.2.4
BFM #5 (CH1) and BFM #6 (CH2): Control output value (MV)
BFM #5 stores the control output value (output ON ratio) of CH1. BFM #6 stores the control
output value (output ON ratio) of CH2.
The display range is from -5.0 to +105.0%.
7.2.5
BFM #7 (CH1) and BFM #8 (CH2): Heater current measured value
BFM #7 stores the heater current measured value of CH1 input from CT. BFM #8 stores the
heater current measured value of CH2 input from CT.
The display range is from 0.0 to +105.0 A.
7.2.6
BFM #9: Default setting command
In BFM #9, initialize the set values.
When BFM #9 is set to "K0 (initial value)", the default setting command is disabled.
When BFM #9 is set to "K1", addresses 10 to 81 are set to the initial values.
When BFM #9 is set to "K2", addresses 10 to 69 are set to the initial values.
However, the initial value of the setting limiter upper/lower limit is the input range upper/lower
limit.
It takes 500 ms maximum to perform initialization.
While initialization is being performed, FROM/TO instructions are not accepted.
7.2.7
BFM #10: Error reset command
In BFM #10, reset errors.
When BFM #10 is set to "K1", all errors occurred in BFM #0 are reset.
If the causes of an error are not eliminated, the corresponding error bit turns on again.
7.2.8
BFM #11: Control start/stop changeover
When BFM #11 is set to "K0 (initial value)", control stops.
When BFM #11 is set to "K1", control starts.
When the PLC basic unit is changed over from "RUN" to "STOP", outputs of the FX
held.
In order to stop outputs of the FX
°
°
°
C,
F or 0.1
F in accordance with the setting of the input type selection
-2LC, make sure to use BFM #11.
2N
Buffer Memory (BFM) 7
-2LC are
2N
7-7
7
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