259
Application Section 2-6
Operation Control Commands
Note 1. The Unit will start in Auto Mode in STOP status when power is turned ON.
2. Input the loop number for @ in the command codes. “A” is used to indicate
all loops. When “A” is used, the operation control command will not be ex-
ecuted for any loops if even one of the four loops does not meet the write
conditions. For example, a setting error will occur (EE01) if the AUTOTUN-
ING command is set when loops 1 to 3 are in RUN status and loop 4 is in
STOP status.
3. The following table shows the conditions required to execute the operation
control commands and the error codes that will occur when the command
causes an error.
❍ = Command valid
Errors: EE00 = Parameter change attempted during autotuning.
EE01 = Setting error
When “A” is used to specify all loops, the command will not be executed
for any loops if even one of the four loops does not meet execution condi-
tions.
4. During manual operation, the manual manipulated variable will be output
regardless of RUN/STOP status.
Command
(Set in output word;
see notes 1 and 2.)
Operation Validity (See note 3.)
CCC@ (@ = 1 to 4 or A) STOP Always (STOP/RUN in
Auto Mode)
CCD@ (@ = 1 to 4 or A) RUN
CDC@ (@ = 1 to 4 or A) Manual Mode (See note 4.) Not valid during autotun-
ing.
CDD@ (@ = 1 to 4 or A) Auto Mode
CFC@ (@ = 1 to 4 or A) Autotuning (See note 5.) PID control (Not valid dur-
ing Manual Mode or
STOP.)
CFD@ (@ = 1 to 4 or A) Cancel autotuning PID control
CEEA (See note 6.) Writing set point to
EEPROM
Always
Auto
Manual
Function
DIP switch
PID
ON/OFF
Autotuning
Cannot be changed during autotuning.
RUN
STOP
Current status RUN
CCD@
STOP
CCC@
Auto
Mode
CDD@
Manual
Mode
CDC@
AT
CFC@
Cancel
AT
CFD@
Write
SP
CEEA
I/O allocation commands
C@@@ Write Read
Auto
Mode
RUN PID AT
❍❍
EE00 EE00
❍❍ ❍❍
EE00
❍
Not
AT
❍❍❍❍ ❍❍ ❍❍ ❍❍
ON/OFF
❍❍❍❍
EE01 EE01
❍❍ ❍❍
STOP
❍❍❍❍
EE01 EE01
❍❍ ❍❍
Manual Mode
❍❍❍❍
EE01 EE01
❍❍ ❍❍
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