Bfm#32 To 35] External Output Value/Heating External Output Value Monitor; Bfm#36 To 39] Cooling External Output Value Monitor; Bfm#40 To 43] Set Value Monitor - Mitsubishi Electric MELSEC FX Series User Manual

FX -4LC User's Manual
3U

8.2.11 [BFM#32 to 35] External output value/Heating external output value monitor

When the control mode using external outputs is selected by the control mode switch function, these buffer
memories store the control output processed within the output limit and scaled into the external output range.
BFM No.
CH1 CH2 CH3 CH4
#32 #33 #34
Caution
When internal output is selected by a control mode change, a control output value (MV) is stored.

8.2.12 [BFM#36 to 39] Cooling external output value monitor

When the control mode using external outputs is selected by the control mode switch function, these buffer
memories store the cooling control output processed within the output limit and scaled into the external output
range.
BFM No.
CH1 CH2 CH3 CH4
#36 #37 #38
Caution
When internal output is selected by a control mode change, a cooling control output value (MV) is stored.

8.2.13 [BFM#40 to 43] Set value monitor

These buffer memories store the set value used in PID control and alarm function.
These buffer memories indicate transient changes in the set value on the slave side when the setting change
ratio limiter is set or during cascade control.
BFM No.
CH1 CH2 CH3 CH4
#40 #41 #42
→ For details on the control mode switch, refer to Subsection 8.2.62.
Display range :
#35
External output range lower limit to external output range upper limit
→ For details on the control output value (MV), refer to Subsection 8.2.4.
→ For details on the control mode switch, refer to Subsection 8.2.62.
Display range :
#39
External output range lower limit to external output range upper limit
→ For details on the cooling control output value (MV), refer to Subsection 8.2.5.
→ For details on the setting change ratio limiter, refer to Subsection 8.2.37.
#43 Display range : Setting limiter lower limit to Setting limiter upper limit
Description
Description
→ For details on the cascade control, refer to Section 6.7.
Description
8 Buffer Memory
8.2 Buffer Memory Details
Initial
R/W Backup
value
0 R -
Initial
R/W Backup
value
0 R -
Initial
R/W Backup
value
0 R -
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