CV500ETN01 Omron, CV500ETN01 Datasheet - Page 139

• 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

Overview of FINS Communications
6-1
6-1-1
6-1-2
114
Overview of FINS Communications
Communications On an Ethernet Network
Using the FINS/UDP and FINS/TCP Methods
Data is sent and received as UDP/IP packets or TCP/IP packets on an Ether-
net network.
In the FINS communications service, both an IP address for IP (the Internet
layer) and a FINS node address for FINS (the application layer) are used for
the remote device. Also, 9600 is used as the default setting for the local UDP
or TCP port number (i.e., the transport layer) for identifying the application
layer, i.e., the FINS communications service. (Another number can be set for
the FINS/UDP port from the Setup Tab in the Unit Setup.)
For details on pairing FINS node addresses with IP addresses and UDP/TCP
port numbers, refer to 5-2 IP Addresses in FINS Communications.
The FINS communications service is a communications method based on
UDP/IP, and it is supported by most OMRON Ethernet-related products. (In
this manual it is called the FINS/UDP method.) In addition to supporting the
FINS/UDP method, the CS1W-ETN21 and CJ1W-ETN21 support FINS com-
munications using TCP/IP. (In this manual, this is called the FINS/TCP
method.)
It is recommended that FINS/UDP and FINS/TCP be used as follows:
• When remote devices do not support the FINS/TCP method:
Use the FINS/UDP method for FINS communications with those devices.
Ethernet
Application Layer
Transport Layer
Internet Layer
Physical Layer
Ethernet Unit
PLC
Packet (FINS response)
FINS
UDP
IP
Ethernet
UDP Port No.
or host computer
Packet (FINS command)
Ethernet Address
Node Number
IP Address
TCP
TCP Port No.
Ethernet Unit
PLC
Section 6-1