Omron Comparison between NT620S/NT620C/NT625C and NT631, NT620S/NT620C/NT625C NT631/NT631C

Functions of the NT631/NT631CSection 1-2

1-2-3	Comparison between NT620S/NT620C/NT625C and NT631/
	NT631C
	Item	NT620S/NT620C/NT625C	NT631/NT631C
Support Tool used		NT-ZJCAT1-EV4 or NT-ZA3AT-EV2	NT-ZJCAT1-EV4
DIP switches		On rear of PT	None (software settings)
Use of Memory Unit		Not possible	Possible
RS-232C interface		Connector (9-pin) also used as port for	- Serial port A connector (also used for screen
		screen data transfer.	data transfer, 9-pin)
			- Serial port B connector (for host communica-
			tions only, 9-pin)
RS-422A/485 interface		NT620S/NT620C: None	Terminal block (serial port B; memory-switch
		NT625C: Terminal block (DIP-switch	selectable between RS232C and RS-422A/485)
		selectable between RS232C and RS-
		422A/485)
Replacement backlight		NT620C-CFL01 (NT620C)	NT631C-CFL01 (for ST151; the backlight for the
		NT610C-CFL02 (NT625C)	NT631C-ST152@-EV2, NT631C-ST153@-EV3,
			however, cannot be replaced by the user)
			NT631C-CFL02 (for ST141)
NT631/NT631C system pro-		NT620-ZS3AT-EV1/EMV1	The system installer and system program data
gram data		(including system installer)	are supplied with the Support Tool.
High-speed 1:N NT Link		Not possible	Possible
Memory	System program	Exclusive use by Memory Link	Same as OMRON connection
Link
	Screen data	Shared with OMRON connection	Exclusive use by Memory Link
LCD contrast adjustment		By a control on the rear of the PT	By touch panel operation
			(Possible in the NT631-ST141@-V2 only.)
Backlight brightness adjust-		Not possible	By touch panel operation
ment			(Possible in the NT631-ST141@-V2 only.)
Number of user-registered		Maximum of 2000	Maximum of 3999
screens
Screen data capacity*1		NT620S: 512 KB	1 MB
(User program memory)		NT620C/NT625C: 1 MB
Numeral string data		Maximum of 1000	Maximum of 2000
Character string data		Maximum of 1000	Maximum of 2000
Bit data		256	Maximum of 1000
Mathematical tables		None	256 max.
			Calculations can be executed automatically in
			the PT.
Image data		Maximum of 224	Maximum of 4095*2
Library data		Maximum of 896	Maximum of 12288*2
Method for storing numeric		Fixed as BCD (binary coded decimal)	Selectable from BCD (binary coded decimal) or
values			binary
(numeral memory data and PT
status control area)
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 CH
Registering continuous screen		Possible	Not possible (Use a screen switchover as a sub-
			stitute.)
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

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