CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 128

• Manufacturer Part Number: CJ1W-EIP21
• Description: Ethernet I/P Module
• Manufacturer: Omron

Specifications of CJ1W-EIP21

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FINS/TCP Communications Method
Pairing in the FINS/TCP
Method
Internal Processing
100
IP Addresses in FINS Communications
1,2,3...
Note
Note If the ETN11-compatible mode is used, the internal table will retain the same
■
Local Device: FINS/TCP Client
content from when it was created after the EtherNet/IP Unit was turned ON or
restarted. This feature provides protection from access via FINS/UDP from
computers that dynamically change their IP address.
With the FINS/TCP method, communications are first established for each
connection, and then remote FINS node addresses are mutually converted.
(See note.) After the FINS node address is converted, FINS message com-
munications are executed.
In this way, remote FINS node addresses and remote IP addresses are paired
for each connection. Therefore, with the FINS/TCP method, there is no need
to set IP address conversions (i.e., pairing FINS node addresses with IP
addresses) as with FINS/UDP. On the other hand, it is necessary to set the
remote IP address for each connection in the FINS/TCP Tab Page of the Net-
work Configurator’s Edit Parameters Dialog Box.
The internal table is changed after connections are established.
The EtherNet/IP Unit or built-in EtherNet/IP port executes the following pro-
cessing when the FINS/TCP method is used.
1. Connections are established in TCP/IP protocol with the remote IP ad-
2. The remote node (i.e., the server) is notified of the FINS node address for
3. Notification is received from the remote node (i.e., the server) of the re-
4. The EtherNet/IP Unit or built-in EtherNet/IP port changes the internal table
5. FINS messages can then be sent and received.
dresses set for FINS/TCP connections in the FINS/TCP Tab Page of the
CX-Programmer’s Edit Parameters Dialog Box.
the local device.
mote node's FINS node address.
(FINS node address, IP address, and TCP port number).
Section 5-2