Omron CQM1H - 08-2005, Operation Manual

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268
each digit is shown below.
CQM1-TC00
j
: 10
3
-10
2
-10
1
-10
0
, e.g., F999 = –999
CQM1-TC10
j
: 10
2
-10
1
-10
0
-10
–1
, e.g., F999 = –99.9
3. The process value data will be set to FFFF during initialization; do not read
the data as the process value at this time.
DM 0000 Write a value in the following ranges to DM 0000 according to the sensor to be
used.
Model Sensor Range
TC00
j
for thermocouples
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)
TC10
j
for platinum resistance
thermometers
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)
3-5-2 Run/Stop and Error Processing Program
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
j
/TC10
j
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 Word Remarks
Temperature Control Unit
input word (loop 1) IR 001 ---
Temperature Control Unit
output word (loop 1) IR 100 ---
Set point storage word DM 0000 ---
Process value storage word DM 0001 ---
Initialization End Flag IR 01600 ---
Error status IR 017 IR 01700: ON for input sensor error.
IR 01701: ON for setting range error.
IR 01702: ON for Watchdog timer,
RAM, Read/Write, or
EEPROM error.
IR 01715: ON for any error.
RUN/Stop bit IR 01800 Control operations will be run when IR
01800 is turned OFF and will be
stopped when it is turned ON.
Operation (for Control Loop
1 Only)
Word/Bit Allocations (for
Control Loop 1 Only)
Application Examples
Section 3-5