Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 666

Data Control Instructions
Control Item
data
Bit 00 of C+5 PID forward/reverse
designation
Bit 12 of C+6 Manipulated vari-
able output limit
control
Bits 08 to 11 Input range
of C+6
Bits 04 to 07 Integral and deriva-
of C+6 tive unit
Bits 00 to 03 Output range
of C+6
C +7 Manipulated vari-
able output lower
limit
C +8 Manipulated vari-
able output upper
limit
Bit 15 of C+9 AT Command Bit
Contents
Determines the direction of the
proportional action.
Determines whether or not limit
control will apply to the manipu-
lated variable output.
The number of input data bits.
Determines the unit for express-
ing the integral and derivative
constants.
The number of output data bits.
(The number of output bits is
automatically the same as the
number of input bits.)
The lower limit for when the
manipulated variable output limit
is enabled.
The upper limit for when the
manipulated variable output limit
is enabled.
This control bit starts autotuning.
• Set the AT Command Bit to 1 to
perform autotuning. (Autotuning
can be started while
PIDAT(191) is being executed.)
• This bit is turned OFF automati-
cally when autotuning is com-
pleted.
Autotuning will be interrupted if
the AT Command Bit is turned
OFF manually. In this case, the
PID constants will be enabled if
they were already calculated
when autotuning was inter-
rupted.
Setting range
0: Reverse action
1: Forward action
0: Disabled (no limit control)
1: Enabled (limit control)
0: 8 bits 5: 13 bits
1: 9 bits 6: 14 bits
2: 10 bits7: 15 bits
3: 11 bits8: 16 bits
4: 12 bits
1: Sampling period multiple
9: Time (unit: 100 ms)
0: 8 bits 5: 13 bits
1: 9 bits 6: 14 bits
2: 10 bits7: 15 bits
3: 11 bits8: 16 bits
4: 12 bits
0000 to FFFF (binary)
(See note 3.)
0000 to FFFF (binary)
(See note 3.)
As a Control Bit:
• 0 1:
Executes autotuning.
• 1 0:
Interrupts autotuning.
(PID(191) turns the bit OFF
automatically when autotuning
is completed.
As a Flag:
0: Autotuning is not being exe-
cuted.
1: Autotuning is being executed.
Section 3-17
Change with
ON input
condition
Not allowed
Allowed
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