Run/Stop And Error Processing Program - Omron CQM1 Operation Manual

Application Examples
DM 0000
3-5-2

Run/Stop and Error Processing Program

Operation (for Control
Loop 1 Only)
Word/Bit Allocations (for
Control Loop 1 Only)
278
Note 1. Write a program for control loop 2 in the same way.
2. The contents of both DM 0000 and DM 0001 are four-digit BCD except that
an F in the leftmost digit is used to indicate negative values. The meaning
of each digit is shown below.
CQM1-TC00@: 10
CQM1-TC10@: 10
3. The process value data will be set to FFFF during initialization; do not read
the data as the process value at this time.
Write a value in the following ranges to DM 0000 according to the sensor to be
used.
Model
TC00@ for thermocouples
TC10@ for platinum resistance ther-
mometers
The contents of DM 0000 are written to the Temperature Control Unit as the
set point.
The process value is read from the Temperature Control Unit and written to
DM 0001. If an error has occurred, however, the value written to DM 0001 will
be treated as an error code.
If the CQM1-TC00@/TC10@ in operation has an error, the condition of the
error is stored as error status.
Temperature control is enabled or disabled by turning the RUN/STOP bit ON
or OFF (loop 1 Only).
Item
Temperature Control Unit input
word (loop 1)
Temperature Control Unit out-
put word (loop 1)
Set point storage word
Process value storage word
Initialization End Flag
Error status
RUN/Stop bit
3 2 1 0
-10 -10 -10 , e.g., F999 = –999
2 1 0 –1
-10 -10 -10 , e.g., F999 = –99.9
Sensor
K –200 to 1,300 C (F200 to 1300)
–300 to 2,300 F (F300 to 2300)
J –100 to 850 C (F100 to 0850)
–100 to 1,500 F (F100 to 1500)
JPt100 –99.9 to 450.0 C (F999 to 4500)
–99.9 to 800.0 F (F999 to 8000)
Pt100 –99.9 to 450.0 F (F999 to 4500)
–99.9 to 800.0 F (F999 to 8000)
Word
IR 001 ---
IR 100 ---
DM 0000 ---
DM 0001 ---
IR 01600 ---
IR 017 IR 01700: ON for input sensor error.
IR 01701: ON for setting range error.
IR 01702: ON for Watchdog timer,
IR 01715: ON for any error.
IR 01800 Control operations will be run when IR
01800 is turned OFF and will be
stopped when it is turned ON.
Section 3-5
Range
Remarks
RAM, Read/Write, or
EEPROM error.