Omron NT21 Reference Manual page 26

Functions of the NT21, NT31/NT31C and NT631/NT631C
Comparison between NT30/NT30C and NT31/NT31C
Item
Compatible Support Tool(s)
DIP switch settings
Use of B7A Interface Unit
Use of Memory Unit
RS-232C interface
RS-422A/485 interface
Backlight color
Replacement backlight
NT31/NT31C system program data
High-speed 1:N NT Link
Memory y System program
Link Li k
Screen data
LCD contrast adjustment
Backlight brightness adjustment
Number of user-registered screens
*1
Screen data capacity
(User program memory)
Numeral string data
Character string data
Bit data
Mathematical table
Image data
Library data
Method for storing numeric values
(numeral memory data and PT status
control area)
PT status control area size
PT status notify area size
Window control area size
Registering continuous screen
Lamp/Touch switch guide characters
10
NT30/NT30C
NT-ZJCAT1-EV4 or
NT-ZA3AT-EV2
On rear of unit
Possible
Not possible
Connector (9-pin) also used as port for
screen data transfer.
Terminal block
White/red (switchable)
NT30-CFL01/NT30C-CFL01
NT-ZS3AT-EV1
(including system installer)
Not possible
Exclusive use by Memory Link
Shared with OMRON connection
By a control on the rear of the unit
Not possible
2,000 max.
512 KB
1,000 max.
1,000 max.
256
None
224 max.
896 max.
Fixed as BCD (binary coded decimal)
4 words
3 words
None
Possible
Fixed display (1 line only)
Section
NT31/NT31C
NT-ZJCAT1-EV4
None (software settings)
Not possible
Possible
- Serial port A connector (also used
for screen data transfer, 9-pin)
- Serial port B connector (for host
communications only, 25-pin)
Serial port B (25-pin D-SUB connector)
White only
NT31C-CFL01
(Used for the NT31-ST121j-EV2
and NT31C-ST141j-EV2. The user
cannot replace the backlight for the
NT31-ST122j-EV2,
NT31C-ST142j-EV2,
NT31-ST123j-EV3, and
NT31C-ST143j-EV3.)
The system installer and system
program data are supplied with the
Support Tool.
Possible
Same as OMRON connection
Exclusive use by Memory Link
By touch panel operation
By touch panel operation
3,999 max.
1 MB
2,000 max.
2,000 max.
1,000 max.
256 entries max.
Calculations can be executed
automatically in the PT.
*2
4,095 max.
*2
12,288 max.
Selectable from BCD (binary coded
decimal) or binary
5 words (partial change of contents)
2 words (partial change of contents)
9 words
Not possible (Use a screen switchover
as a substitute.)
- Multiple lines can be displayed
- ON/OFF switching is possible
- Numeral display is possible
- Character string display is possible
1-2
*2
*2