Yokogawa Data Acquisition with PID Control CX2000 User Manual
Page 85
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IM 04L31A01-01E
Explanation of Functions
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2
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14
Setting Groups
The control monitoring data and measured/computed data on the operation display are
shown in groups. Therefore, control loops and measurement channels must be
assigned to groups.
Setting Control Groups (for the Control Function)
Up to 6 loops can be assigned to each group. There are eight groups in which external
loops (loops of externally connected controllers) can also be registered. You can assign
a group name for each group.
Setting Measurement Groups (for the Measurement Function)
Measurement channels or computation channels are assigned. Up to 10 groups can be
registered. The groups are common to the trend, digital, and bar graph displays.
On the trend, digital, and bar graph displays, the displayed groups can be automatically
switched at “5 s,” “10 s,” “20 s,” “30 s,” or “1 min” intervals.
For trend display, the waveform of all applicable channels can be displayed on a single
display rather than in groups.
Displaying Tags
For identifying the control loops and channels, tags (tag comments can also be assigned
to control loops) can be displayed in place of numbers.
Control Operation Display > Control Group Display
Target setpoint (SP)
Red:
Can be set
Yellow: Cannot be set
Loop selection
cursor
Auto/manual
Tag name
PV input value
*
Target setpoint
*
Control output value
*
Remote (REM) or local (LOC)
Operation running (RUN), operation stopped (STP),
or auto tuning (blinking AT)
Alarm mark
PV input value
Upper limit alarm
Red: Alarm
occurrence
Green: Alarm OFF
Control output value (OUT)
Red: Controllable
Yellow: Not controllable
Scale
(The value indicates span lower
limit or upper limit.)
Process value (PV)
Red: Alarm
occurrence
Green: Alarm OFF
Tag comment
display section
*
Red when alarm
is occurring
DIO operation monitoring function
Analog retransmission
When monitoring
only DI or DO
Displayed using the
specified color when
DO or DI is ON
Displayed using the
specified color when
DO or DI is OFF
Displayed using the
specified color when
DO is ON
Displayed using the
specified color when
DO is OFF
When monitoring
both DI and DO
Displayed using the
specified color when
DI is ON
Displayed using the
specified color when
DI is OFF
Output value
Tag
Tag comment
Label for ON
Label for OFF
1.16 Display Function