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Logic Operations Section 4-25
Manual Operation
With models that support position-proportional control, manual operation is
possible by moving to the manual control level and pressing the Up and Down
Keys. The output on the open side is ON while the Up Key is pressed, and the
output on the closed side is ON while the Down Key is pressed. If the Direct
Setting of Position Proportional MV parameter is set to ON and closed control
is used, however, the Manual MV parameter can be set with the same display
and operations as for standard models.
MV at Stop and Error
With floating control or when the Direct Setting of Position Proportional MV
parameter is set to OFF, select to output open, closed, or hold status when
stopped or when an error occurs. If the Direct Setting of Position Proportional
MV parameter is set to ON for closed control, set the MV.
4-25 Logic Operations
4-25-1 The Logic Operation Function (CX-Thermo)
• The logic operation function logically calculates as 1 or 0 the Controller
status (alarms, SP ramp, RUN/STOP, auto/manual, etc.) and the external
event input status, and outputs the results to work bits. The work bit status
can be output to auxiliary or control outputs, and operating status can be
switched according to the work bit status.
• Work bit logic operation can be set from 1 to 8. Set them to No operation
(Always OFF) (the default) when the work bits are not to be used. When
logic operations are being used, a dot will be displayed on the No. 2 dis-
play of the adjustment level display
4-25-2 Using Logic Operations
Logic operations are set using the CX-Thermo.
Starting Logic
Operations
There are two ways to start logic operations.
•Select Logic Operation Editor from the CX-Thermo tree, and click the
Start Button.
l.adj
.
Dot displayed.
Adjustment level displa
Adjustment Level
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