Omron CS1W-ETN21 operation manual Comparison with Previous Models, Previous models New models

Comparison with Previous ModelsSection 1-7

1-7	Comparison with Previous Models
		Item		Previous models	New models
Model number				CS1W-ETN11	CS1W-ETN21
				CJ1W-ETN11	CJ1W-ETN21
Physical layer				10Base-T	100Base-TX, 10Base-T
Number of nodes				126	254
PLC maintenance via the Internet				Not possible to send FINS	Can send commands (including FINS com-
				commands from a personal	mands) by e-mail over the Internet from a
				computer to the PLC via the	personal computer to the PLC (using the
				Internet.	mail receive function).
Server specification				Specification by IP address	Specification by IP address or by host name
				only	(using the DNS client function)
Communi-		FINS com-	Automatic IP	Not possible for a computer	A computer automatically acquiring IP
cations ser-		munica-	address acquisi-	automatically acquiring IP	addresses can send commands to the PLC
vice		tions	tion (DHCP cli-	addresses to send commands	and receive responses.
		service	ent) by personal	to the PLC and receive	(UDP/IP: By automatic generation
			computer	responses.	(dynamic) IP address conversion method;
					TCP/IP: Automatic)
			FINS communi-	Not possible	Possible (with Automatic allocation by
			cations with per-		Ethernet Unit)
			sonal computers		(Client FINS automatic node address allo-
			without fixed		cation function, TCP/IP only)
			node addresses
			Handling TCP/	With FINS communications,	With FINS communications, both UDP/IP
			IP	only UDP/IP possible.	and TCP/IP possible.
			Simultaneous	Not possible	Possible (with both UDP/IP and TCP/IP)
			connection of
			multiple applica-
			tions in a per-
			sonal computer
		Mail functions		Mail send function only	E-mail attachments with I/O memory data
					are now possible for the mail send function.
					(SMTP client function, file attachment func-
					tion)
					With the mail receive function, commands
					can be received from the PLC. (POP3 client
					function, mail receive function)
		FTP server function		Same
		Socket services function		---	The following features have been added to
					the TCP socket services function:
					• Use of keep-alive
					• Number of bytes of data received for TCP
					socket Nos. 1 to 8
					• Status of TCP socket Nos. 1 to 8: Data
					Received Flag
		Automatic clock information		Not possible	CPU Unit built-in clock can be adjusted from
		adjustment			SNTP server. (SNTP client function)

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