Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 147

Temperature control
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CH1 Heating upper limit output limiter
Set the upper limit value for actually outputting the manipulated value for heating (MVh) calculated by the heating and cooling
PID operation to an external device. In the auto tuning, this setting is ignored.
■Buffer memory address
The following table shows the buffer memory address of this area.
Buffer memory name
CH Heating upper limit output limiter
CH Heating upper limit output limiter (If using FX3 allocation mode)
■Setting range
This is 0 to 1050 (0.0 to 105.0%).
When a value out of the setting value is set, an out of setting range error (error code: 1950H) occurs. When an error has
occurred, the following operations will be executed.
• 'Error flag' (Un\G398, b2) turns ON.
• An error code is stored in 'Latest error code' (Un\G0).
In the heating-cooling PID control, the lower limit value is not used. When 'CH1 Lower limit output limiter'
(Un\G509) is set to a value other than 0, an out of setting range error (error code: 1950H) occurs.
■Two-position control
In the two-position control, this setting is disabled.
■Default value
The default value is 1000 (100.0%).
CH1 Lower limit output limiter
Set the lower limit value for actually outputting the manipulated value (MV) calculated by the PID operation to an external
device.
■Buffer memory address
The following table shows the buffer memory address of this area.
Buffer memory name
CH Lower limit output limiter
CH Lower limit output limiter (If using FX3 allocation mode)
■Setting range
-50 to upper limit output limiter -1 (-5.0% min.)
Set values so that the lower limit output limiter value is smaller than the upper limit output limiter value.
When the lower limit output limiter value is equal to or greater than the upper limit output limiter value, CH Upper/lower limit
output limiter setting error (error code: 1A0H) occurs.
When a value out of the setting value is set, an out of setting range error (error code: 1950H) occurs. When an error has
occurred, the following operations will be executed.
• 'Error flag' (Un\G398, b2) turns ON.
• An error code is stored in 'Latest error code' (Un\G0).
■Two-position control
In the two-position control, this setting is disabled.
■Default value
The default value is 0 (0.0%).
CH1
CH2
508
708
42
74
CH1
CH2
509
709
65
105
Appendix 4 Buffer Memory Areas
CH3
CH4
908
1108
106
138
CH3
CH4
909
1109
145
185
APPX
145
A

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