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Comparison with Previous Models Section 9-7
9-7 Comparison with Previous Models
Note Limited by the CP1W-CIF41 inner bus protocol (Toolbus, 115200kbps), the system response per-
formance is longer than the existing Ethernet Unit. Please consider the FINS command process-
ing time and buffer limitation when using the CP1W-CIF41 Ethernet Option Board.
Item Previous Models New Models
Model number CS1W-ETN21
CJ1W-ETN21
CP1W-CIF41
Physical layer 100/10Base-TX 100/10Base-TX (Auto-MDIX)
Number of nodes 254 254
PLC maintenance via the Internet Can send commands, including FINS
commands, by e-mail over the Internet
from a computer to the PLC.
Not supported
Server specification Specification by IP address or by host
name
Not supported
FINS communi-
cations
service
Automatic IP address
acquisition
A computer automatically acquiring IP
addresses can send commands to the
PLC and receive responses.
Same as previous models
FINS communication
with computer without
fixed node address
Possible, with Automatic allocation by
Ethernet Option Board (Client FINS
automatic node address allocation
function, TCP/IP only)
Same as previous models
Handling TCP/IP With FINS communications, both
UDP/IP and TCP/IP (with up to16
simultaneous connections and all can
be set to client) possible.
With FINS communications, both
UDP/IP and TCP/IP (with up to 2
simultaneous connections) possible.
Simultaneous connec-
tion of multiple applica-
tions in a computer
Possible (with both UDP/IP and
TCP/IP)
Same as previous models
Mail functions Supported Not Supported
FTP server function Supported Not Supported
Socket services function Supported Not Supported
Automatic clock information adjustment Supported Not Supported
FINS frame length 2012 1016
Buffer numbers 392 (2K bytes×392) 14 (1016 bytes×6+240 bytes×8)
Inner bus Parallel Serial port
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