Mitsubishi Electric MELSEC iQ-R Series User Manual page 40

Relationship between CPU module status and analog output
When the CPU module status is changed, the operation of the rate control function varies depending on the setting of the
analog output HOLD/CLEAR function as shown below.
■When the analog output HOLD/CLEAR function is set to CLEAR
If the status of CPU module changes from RUN to STOP (error), the rate control stops and offset value is output in analog. If
the status of CPU module changes from STOP (error) to RUN, the rate control restarts from the offset value.
(1)
Analog output value
RUN
CPU module status
(1) The D/A-converted 'CH1 Digital value' (Un\G460)
(2) Offset value
(3) Rate control enabled
■When the analog output HOLD/CLEAR function is set to HOLD
If the status of CPU module changes from RUN to STOP (error), the rate control stops and the current analog output value
continues to be output in analog. If the status of CPU module changes from STOP (error) to RUN, the rate control restarts
from the offset value.
(1)
Analog output value
RUN
CPU module status
(1) The D/A-converted 'CH1 Digital value' (Un\G460)
(2) Offset value
(3) Rate control enabled
Precautions
• The setting of the shift function is enabled during the rate control.
• When the warning output function is enabled, the warning determination is performed to the set 'CH1 Digital value'
(Un\G460). The warning determination is not performed when the analog output value reaches the value corresponding to
the warning output upper limit or warning output lower limit due to the rate control.
• The rate control is still valid during the analog output test when the CPU module is in the STOP state.
• When a value out of the setting range is written to 'CH1 Digital value' (Un\G460) during the rate control, the rate control is
performed with the upper or lower limit value of the setting range.
• When the external power supply is turned off during the rate control, the rate control does not function and the analog
output value changes to 0V/0mA. When the external power supply is recovered, the rate control is restarted from the offset
value.
• When disconnection is detected during the rate control, the rate control does not function and the analog output value
changes to 0V/0mA. When 'Disconnection detection signal' (XD) is cleared after recovery from the disconnection, the rate
control is restarted from the offset value.
1 FUNCTIONS
38
1.10 Rate Control Function
(2)
STOP (error)
(2)
STOP (error)
(3)
(1)
RUN
(3)
(1)
RUN