Omron NT21 User Manual

Appendix BCompatibility with Screen Data of Other PT Models
440
Differences between the NT30/NT30C and the NT31/NT31C and
Differences between the NT620S/NT620C/NT625C and the
NT631/NT631C
This section explains the differences in screen creation and programming between the NT30/NT30C and the
NT31/NT31C as well as the NT620S/NT620C/NT625C and NT631/NT631C. The -V2 or -V3 versions of the
NT31/NT31C and NT631/NT631C are described here. For details of the differences between different versions of
the NT31/NT31C and NT631/NT631C, refer to Differences between NT31/NT31C and NT631/NT631C Models
without the -V1 Suffix and Models with -V1 (page 445) or Differences between -V1 and -V2/-V3 NT31/NT31C and
NT631/NT631C PTs (page 447).
Refer to 1-2 Functions of the NT21, NT31/NT31C, and NT631/NT631C for details on functional differences be-
tween the PT models (page 4).
Reference: The NT30/620 compatible mode can be used to reduce the differences with the
NT30, NT30C, NT620S, NT620C, and NT625C and allow their screen data and
user programs to be reused easily. Refer to Appendix C for details (page 451).
Item NT30/NT30C, NT620S/NT620C/NT625C NT31/NT31C, NT631/NT631C
Fore-
ground/
back-
ground
relation-
ships in
screen
drawing
Display Element Type
Contents of display elements that have data
System keypad
Frames of broken line graphs
Frames of trend graphs
Input settings
(numeral, character string, thumbwheel, temporary)
Frames of bar graphs
Fixed displays
Lamps (normal lamp frames)
Alarm list/history frames
Touch switches
Image/library data
Screen background
Foreground
Background
Display Element Type
Image/library lamps
Recipe
Alarm list/history frames
Temporary input
Character string input
Thumbwheel type input
Numeral input
Trend graphs
Broken line graphs
Analogue meter
Frames of bar graphs
Numeral displays
Character string displays
Fixed displays
Lamp displays
Touch switches
Image/library data
Screen background
Foreground
Background
PT status
control
area
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Word n
Word n+1
Word n+2
Word n+3
Screen number (4 BCD digits)
Copy type
PT status control bits 0 0
0
Copy source memory table entry No. (3 BCD digits)
Copy destination memory table entry No. (3 BCD digits)
Bit
Word
Word n+4
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Word n
Word n+1
Word n+2
Word n+3
Bit
Word
Screen number (4 BCD or hexadecimal digits)
Copy source memory table entry No. (4 BCD or hexadecimal digits)
Copy destination memory table entry No. (4 BCD or hexadecimal digits)
PT status control bits
Reserved for system use

Omron NT21 Specifications

General

Brand	Omron
Model	NT21
Category	Touch terminals
Language	English