Omron NT21 Series, Справочное руководство

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2-6 Section Lamps
106
The range of each memory area differs according to the PC. Refer to Appendix D
PC Memory Maps on page 429.
When a DM Area or EM Area address is specified, add a bit number (00 to 15) to
the end of the word address.
Display of Lamps
Lamps are displayed as follows according to the status of the allocated bit.
0 (OFF): OFF
1 (ON):
ON, or flashing
Whether a lamp lights continuously or flashes when the lamp bit is set to 1
(ON) is determined by the ON Type attribute.
Note that the display when the lamp is ON or flashing also changes accord-
ing to the presence or absence of a frame.
When there is a frame: The frame is always displayed.
When there is no frame: The lamp may be invisible when it is OFF depend-
ing on the OFF color.
[When there is a frame display] [When there is no frame display]
(OFF)
Light
Flash
Only the area inside
the frame flashes.
(OFF)
Lamp alternates
between displayed and
not-displayed states.
Light
Flash
Guide Character Type
The following 4 types of guide characters can be displayed on the PT.
Type Description
Fixed character
string The same character string is always displayed regardless of
the status of the lamp.
ON/OFF switching Different character strings are displayed when the lamp is ON
(or flashing) and OFF. It is also possible to display more than
one line of guide characters.
Numeral display The contents of a numeral memory table are displayed in real
time as the lamp’s guide characters.
Character string
display The contents of a character string memory table are displayed
in real time as the lamp’s guide characters.
The guide character settings for each guide character type are as follows:
•
Fixed Character String Settings
The settings are the same as the settings for the fixed display’s character
strings except that multiple lines and their alignment (left, center, or right) can
be specified.
For details on displaying multiple lines and specifying alignment, refer to
Dis-
playing Multiple Lines of Guide Characters on page 107. For details on other
properties, refer to
2-4-2 Text (Fixed Display).
Reference: Different colors can be set for a lamp’s guide characters when ON and OFF, but
the background color is always transparent.
•
ON/OFF Switching Character Settings
Different character strings can be specified for display when the lamp is ON
(lamp bit ON) and OFF (lamp bit OFF). It is also possible to specify different
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