Omron V022-E3-1 operation manual Comparison between NT600S and NT600M, 2-2-3, Section

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿					Section 1-2
2-2-3	Comparison between NT600S and NT600M
			The NT600S is a unitary PT which incorporates a system ROM, screen memory,
			and a host I/F unit (host link, NT link, and RS-232C) as the standard equipment in
			one body.
			The NT600S has the following features which are different from those of existing
			NT600M;
	Function		NT600S-ST121/-ST211-EV￿		NT600M-DT122
Communication		Host link/NT link/NT Link (1:1, 1:N)/RS-232C			Host I/F units are required.
		incorporated.
		The C200H direct communication function can
		be used if the separately purchased C200H
		interface unit (NT-LB122) is mounted on the
		rear of the NT600S.
Communication connec-		The communication connector (9-pin) for a			Both the support tool connector (9-pin) and
tor		PC/Host is shared with that for a support tool.			PC connector (25-pin) are located on the
		When using the C200H direct communication			back side.
		function, there are separate connectors for
		communications with the support tool and PC/
		Host.
Host RUN input terminal/		Not provided			Provided
Alarm output terminal
System keys		Not provided			Provided
Contrast control		Back side (ST121)		None (ST211)	Front side
Expanded I/O unit		Expanded not possible			Possible with DN type
Waterproof performance		NEMA4			Conforms to IP52F.
Visibility in direct sunlight		Good (ST121)		None (ST211)	Barely visible
Power supply		24 VDC, more than		24 VDC, more than	100/200 VAC
		15 W (ST121(B))		25 W (ST211(B))
Allowable momentary		Not guaranteed			5 msec
power interruption time
System ROM		Built in (512 KB, not replaceable)			System ROM compatible with host I/F unit is
					required.
Resume function		Provided (if optional battery is mounted)			Provided
History retaining function		Provided (if optional battery is mounted)			Provided
Screen transfer		✓			✓
Screen data compatibility		✓ (Note 1)			--
PC ladder compatibility		✓			--
Backlight replacement		✓ (ST121 (B))			￿
Screen data memory		Built in (flash memory only)			Optional (select from EP-ROM, SRAM, and
					EEP-ROM)
Screen data memory		128 KB			256 KB max.
capacity
Outside dimensions		275 ￿192 ￿71mm			325 ￿198 ￿105mm
	Note		1. If a system key function is required on continuous screens or for numerical
			setting or buzzer stop, use a support tool and set the touch switches which
			have the system key function in such screens.
			For details, refer to “System Key Functions” on page 142.

128 KB of screen data memory capacity is equivalent to 200 screens consist- ing mainly of messages, or 70 screens consisting mainly of figures.

￿