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1-2
Section
Comparison between NT20S and NT21
5
Item
NT21
NT20S
PT Status Notify Area size
3 words
2 words (partial change of contents) (3
words in NT20S-compatible mode)
Window Control Area size
None
9 words
Clock Data Area size
None
4 words
Registering continuous screen
Possible
Not possible (Use a screen switchover
as a substitute.)
System tenkey
Possible
Not possible (Use the normal tenkey
as a substitute.)
Lamp/Touch switch labels
Fixed display (1 line only)
- Multiple lines can be displayed
- ON/OFF switching is possible
- Numeral display is possible
- Character string display is possible
Interlock function
None
Operations can be disabled from the
PC by allocating interlock bits to the
corresponding touch switch, numeral
input, character string input,
thumbwheel switch, or recipe.
Programming Console function
Not possible
Possible
Bar code reader connection
Not possible
Possible
High-resolution fonts
Not possible
Possible
Applicable character codes
CP437 (equivalent to English DOS)
CP437 (equivalent to English DOS) or
ISO8859/1 (equivalent to English Win-
dows)
Accessible CS/CJ PC data Areas
---
The data Areas listed below can be
accessed in addition to the data Areas
accessible with the NT30/NT30C.
*4
- EM banks (EM_0 to EM_C)
- Timer completion flags (TU)
- Counter completion flags (CU)
- Work Areas (WR)
- Task flags (TK)
- HR Area
*1: The Battery is optional.
*2: An RS-232C command system is supported instead (NT20S-ST128 only)
*3: The capacity of the flash memory that stores image data.
*4: Only when communicating with a CS/CJ-series PC on a 1:N NT Link. (Access is not possible via a Host Link.)