Omron CQM1 - Features and Word Allocations; Features; Word Allocations

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Features and Word Allocations Section 3-1
3-1 Features and Word Allocations
3-1-1 Features
• The PID with advanced feed-forward circuitry (2 degrees of freedom) of
the CQM1-TC00@/TC10@ assures stable temperature control. The Units
can be set to ON/OFF control.
•CQM1-TC00@ Temperature Control Units for thermocouples and CQM1-
TC10@ Temperature Control Units for platinum resistance thermometers
are available. Each Temperature Control Unit can be used for two-loop
temperature control.
Temperature control Units
3-1-2 Word Allocations
• One word each can be allocated for inputs and outputs if only one control
loop is used (when DIP switch pin 5 is ON).
• Two words each will be allocated for inputs and outputs if two control
loops are used (when DIP switch pin 5 is OFF),
• Data is handled as four digits of 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
3
-10
2
-10
1
-10
0
, e.g., F999 = –999
CQM1-TC10@:10
2
-10
1
-10
0
-10
–1
, e.g., F999 = –99.9
• The set point setting range is as follows:
F999 to 9999, or CCCC
• The contents of the process value is as follows:
F999 to 9999: Process value
E@@@: Error code
FFFF: Initialization
Temperature sensor Output type
NPN output PNP output
Thermocouple CQM1-TC001 CQM1-TC002
Platinum resistance ther-
mometer
CQM1-TC101 CQM1-TC102
I/O Address Bit
15 12 11 8 7 4 3 0
Output m Loop 1 set point (SP)
m + 1 Loop 2 set point (SP)
Input n Loop 1 process value (PV)
n + 1 Loop 2 process value (PV)