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*1 Indicates the values of CH Simultaneous temperature rise gradient data (Un\G731, Un\G747, Un\G763, Un\G779) and
CH Simultaneous temperature rise dead time (Un\G732, Un\G748, Un\G764, Un\G780).
For details on the simultaneous temperature rise function, refer to the following. Page 238, Section 4.20.
*2 If conditions other than above lead to 1 (ON), also check the following table depending on the set content in CH Self-
tuning setting (Un\G574, Un\G606, Un\G638, Un\G670).
b9
Simultaneous
temperature rise
parameter error status
This flag is set to 1 (ON) when simultaneous
temperature rise parameter
*1
cannot be
calculated by self-tuning.
This flag is set to 0 (OFF) when either of the
following operation is performed.
• When the operation mode shifts to the setting
mode by turning off from on Setting/operation
mode instruction (Yn1)
• When CH Unused channel setting
(Un\G61, Un\G93, Un\G125, Un\G157) is set
to Unused (1)
• When CH PID control forced stop
instruction (YnC to YnF) is turned on from off
• When CH Self-tuning setting (Un\G574,
Un\G606, Un\G638, Un\G670) is set to Do
not run the ST (0)
This flag is also set to 0 (OFF) in the following
cases.
• When the self-tuning starts by changing the
set value (SV)
• When the vibration ST starts by vibration
caused by disturbance of the process value
(PV)
b10 Self-tuning error
This flag is set to 1 (ON) when either of the
following operation is performed during the
self-tuning.
*2
• Set value (SV) setting change (only during
starting)
• PID constants change
• Setting change rate limiter change
• Output limiter change
• Output variation limiter change
• Control output cycle change
• Sensor correction change
• Primary delay digital filter change
• AUTO to MAN mode shift
• Forward/reverse action shift
This flag is also set to 1 (ON) in the following
cases
• When 6000 seconds (1 hour 40 minutes)
or more have elapsed from the start of
self-tuning
• When the change rate of the process
value (PV) during self-tuning is less than
1.125°C/minute
• When the temperature process value (PV)
is out of the temperature measurement
range
• When required measurement data is not
obtained because the manipulated value
(MV) does not reach the upper limit output
limiter value or the lower limit output
limiter value until the measurement is
completed
• When the temperature process value (PV)
decreases by 1°C
() or more though it
should increase after the self-tuning is
started as the starting ST
• When temperature process value (PV)
increases by 1°C
() or more though it
should decrease after the self-tuning is
started as the starting ST
b11 to b15 (fixed to 0) (Unused)
Bit Flag name
Condition on which value turns to 1
(ON)
Condition on which value turns to 0
(OFF)