Omron CXONE-ALC-V4 - 10-2010 Operation Manual page 59

Basic PID (Block Model 011)
1: Status
This button is used to switch between the statuses for Stop Block Operation
Command (tag ITEM MT_ST (ITEM 000)), Alarm Stop Switch (tag ITEM AOF
(ITEM 017)), and AT Command/AT Executing (tag ITEM AT (ITEM 035)).
Each button is built as an alternate ON/OFF Button, and using an Alternate
Simple Rectangle (Type 2), as shown in the following table.
Button Tag Color
ITEM (OFF)
Stop block MT_ST Gray
operation
(ITEM
command
000)
Alarm AOF Gray
stop
(ITEM
switch
017)
AT com- AT Gray
mand/ AT
(ITEM
executing
035)
The read address is set as the display address and the write address is set as
write address 1.
2: Alarm Set Values
The alarm set values are displayed and set with engineering units. The follow-
ing table shows the tag ITEMs used for setting alarm set values.
Alarm type
LL (Low/low alarm)
L (Low alarm)
H (High alarm)
HH (High/high alarm)
DV (Deviation alarm)
Numeral Display and Input objects are used to create these fields, and a ten-
key pad is displayed when a field is touched. The following table shows the
upper and lower limits of the setting ranges.
Alarm type
−15% in the corresponding
LL (Low/low alarm)
engineering units
−15% in the corresponding
L (Low alarm)
engineering units
−15% in the corresponding
H (High alarm)
engineering units
−15% in the corresponding
HH (High/high
alarm) engineering units
DV (Deviation alarm) 0% in the corresponding engi-
neering units
The engineering unit displayed for the unit as a Text object.
Data is written to the write address of each tag ITEM using the Before Writing
Numeral/String macro.
Color Label Label
(ON) (OFF) (ON)
Yellow Operating Operation
stopped
Yellow Alarm ON Alarm dis-
abled
Yellow AT OFF AT ON
Alarm set value tag ITEM
LL_SP (ITEM 011)
L_SP (ITEM 010)
H_SP (ITEM 009)
HH_SP (ITEM 008)
DVA_SP (ITEM 041)
Upper limit
115% in the corresponding
engineering units
115% in the corresponding
engineering units
115% in the corresponding
engineering units
115% in the corresponding
engineering units
115% in the corresponding
engineering units
Section 6-1
Write
confirmation
message
Yes
"OK?"
Yes
"OK?"
Yes
"The MV will
change is AT is
executed/stopped.
OK?"
Lower limit
43