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Application Examples Section 3-5
Output Interface
Output Characteristeics
Output Circuits
3-5 Application Examples
3-5-1 Basic Program for Temperature Control Unit
Operation (for Control
Loop 1 Only)
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.
Word/Bit Allocations (for
Control Loop 1 Only)
Maximum switching capability
100 mA, 24 VDC
+10%
/
–15%
Leakage current 0.3 mA max.
Residual voltage 3.0 V max.
External supply voltage
15 mA min., 24 VDC
+10%
/
–15%
(exclud-
ing load current)
+DC
OUT
COM
COM
OUT
0 V
CQM1-TC 01 (NPN) CQM1-TC 02 (PNP)
Temperature Control Unit input word IR 001
Temperature Control Unit output word IR 100
Set point storage word DM 0000
Process value storage word DM 0001
Initialization End Flag IR 01600
CMP(20)
#FFFF
001
END(01)
25313
01600
25506
MOV(21)
DM0000
100
01600
MOV(21)
001
DM0001
Always ON Flag
(=)
If the process value (contents of IR 001) is not
FFFF, IR 01600 is turned ON to indicate that
initialization has been completed.
If IR 01600 is ON, the contents of DM 0000 will
be written as the set point to IR 100.
If IR 01600 is ON, the contents of IR 001 will
be read to DM 0001 as the process value.
The contents of IR 001 is compared to FFFF to
confirm that the Temperature Control has com-
pleted initialization processing. (See note 3)
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