Omron NT21 User Manual

1-2SectionFunctions of the NT21, NT31/NT31C and NT631/NT631C
10
Comparison between NT30/NT30C and NT31/NT31C
Item NT30/NT30C NT31/NT31C
Compatible Support Tool(s) NT-ZJCAT1-EV4 or
NT-ZA3AT-EV2
NT-ZJCAT1-EV4
DIP switch settings On rear of unit None (software settings)
Use of B7A Interface Unit Possible Not possible
Use of Memory Unit Not possible Possible
RS-232C interface Connector (9-pin) also used as port for
screen data transfer.
- Serial port A connector (also used
for screen data transfer, 9-pin)
- Serial port B connector (for host
communications only, 25-pin)
RS-422A/485 interface Terminal block Serial port B (25-pin D-SUB connector)
Backlight color White/red (switchable) White only
Replacement backlight NT30-CFL01/NT30C-CFL01 NT31C-CFL01
(Used for the NT31-ST121-EV2
and NT31C-ST141-EV2. The user
cannot replace the backlight for the
NT31-ST122-EV2,
NT31C-ST142-EV2,
NT31-ST123-EV3, and
NT31C-ST143-EV3.)
NT31/NT31C system program data NT-ZS3AT-EV1
(including system installer)
The system installer and system
program data are supplied with the
Support Tool.
High-speed 1:N NT Link Not possible Possible
Memory
Li k
System program Exclusive use by Memory Link Same as OMRON connection
y
Link
Screen data Shared with OMRON connection Exclusive use by Memory Link
LCD contrast adjustment By a control on the rear of the unit By touch panel operation
Backlight brightness adjustment Not possible By touch panel operation
Number of user-registered screens 2,000 max. 3,999 max.
Screen data capacity
*1
(User program memory)
512 KB 1 MB
Numeral string data 1,000 max. 2,000 max.
Character string data 1,000 max. 2,000 max.
Bit data 256 1,000 max.
Mathematical table None 256 entries max.
Calculations can be executed
automatically in the PT.
Image data 224 max. 4,095 max.
*2
Library data 896 max. 12,288 max.
*2
Method for storing numeric values
(numeral memory data and PT status
control area)
Fixed as BCD (binary coded decimal) Selectable from BCD (binary coded
decimal) or binary
PT status control area size 4 words 5 words (partial change of contents)
*2
PT status notify area size 3 words 2 words (partial change of contents)
*2
Window control area size None 9 words
Registering continuous screen Possible Not possible (Use a screen switchover
as a substitute.)
Lamp/Touch switch guide characters Fixed display (1 line only) - Multiple lines can be displayed
- ON/OFF switching is possible
- Numeral display is possible
- Character string display is possible

Omron NT21 Specifications

General

Brand	Omron
Model	NT21
Category	Touch terminals
Language	English