CV500ETN01 Omron, CV500ETN01 Datasheet - Page 145

• Manufacturer Part Number: CV500ETN01
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500ETN01

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

FINS/TCP Method
FINS/TCP
Communications
Procedure
120
Example:
IP address C
FINS node number A
Remote node No. received
Connection established
Personal computer
FINS frame sent
Local node No. sent
Active open
(Client)
FINS node number A sent
FINS node number B sent
FINS/TCP Connection Status (Word n+23)
While a connection with a remote node is established, the bit corresponding to
the FINS/TCP connection status turns ON in the section of the CPU Bus Unit
words allocated in the CIO Area. The bit turns OFF if the connection is termi-
nated by a communications error or a FINS command (i.e., FINS/TCP CON-
NECTION REMOTE NODE CHANGE REQUEST).
With FINS/TCP, FINS node addresses are exchanged immediately after a
connection is established. This makes it possible to determine the FINS node
addresses to which the 16 connection numbers, and to manage them in an
internal table.
After a connection has been established as a FINS/TCP server, it is termi-
nated in the following ways.
After a connection has been established as a FINS/TCP client, it can be termi-
nated in the following ways.
Connection request (C S)
Full duplex communications
• When the connection is closed by the client.
• When a FINS command to close the connection (FINS/TCP CONNEC-
• When there is no response from the client when the keep-alive function is
• If the connection is closed by the server.
• If there is no response from the client when the keep-alive function is in
TION REMOTE NODE CHANGE REQUEST) is sent by the client.
in effect.
effect.
n+23
*: Bit 15 corresponds to connection No. 16, bit 00 to connection No. 1, etc.
15 14 13 12 11 10 09
Example:
IP address S
FINS node number B
Remote node No. received
Connection established
FINS frame sent
Local node No. sent
Passive open
Ethernet Unit
(Server)
08
07 06
Connection established
FINS node numbers exchanged
Normal data communications
05 04 03 02 01 00
Section 6-3