Application Examples; Basic Program For Temperature Control Unit - Omron CQM1H series Operation Manual

Application Examples

Output Interface
Output Characteristics
Output Circuits
3-5

Application Examples

3-5-1 Basic Program for Temperature Control Unit

Operation (for Control Loop
1 Only)
Word/Bit Allocations (for
Control Loop 1 Only)
Always ON Flag
25313
(=)
25506
01600
Maximum switching capability
Leakage current
Residual voltage
External supply voltage
CQM1-TCj01 (NPN)
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.
Temperature Control Unit input word
Temperature Control Unit output word
Set point storage word
Process value storage word
Initialization End Flag
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
100 mA, 24 VDC
0.3 mA max.
3.0 V max.
15 mA min., 24 VDC
(excluding load current)
+DC
OUT
COM
IR 001
IR 100
DM 0000
DM 0001
IR 01600
The contents of IR 001 is compared to FFFF to
CMP(20)
confirm that the Temperature Control has com-
#FFFF
pleted initialization processing. (See note 3)
001
If the process value (contents of IR 001) is not
01600
FFFF, IR 01600 is turned ON to indicate that
initialization has been completed.
If IR 01600 is ON, the contents of DM 0000 will
MOV(21)
be written as the set point to IR 100.
DM0000
100
If IR 01600 is ON, the contents of IR 001 will
MOV(21)
be read to DM 0001 as the process value.
001
DM0001
END(01)
Section 3-5
+10%
/
–15%
+10%
/
–15%
CQM1-TCj02 (PNP)
COM
OUT
0 V
267