1-1
Section
Features
2
1-1
Features
The Ethernet Unit enables a Programmable Controller (PC) to support a wide
range of protocols via Ethernet, including data communications by TCP/IP and
UDP/IP socket services, FINS command execution (OMRON’s standard proto-
col), FTP file transfers, and SMTP message communications.
The Ethernet Unit supports the standard Ethernet protocols, UDP/IP and TCP/
IP, so it can communicate with other Ethernet devices, workstations, personal
computers, and Ethernet Units produced by other manufacturers. It can utilize
up to eight socket ports for the various protocols, allowing it to be employed in a
wide range of applications.
TCP or UDP socket services can be easily accessed either by executing the
CMND(490) instruction or by presetting parameters and then manipulating dedi-
cated control switches in memory. Presetting parameters eliminates the need
for ladder programs to monitor the completion timing of instructions and socket
service processing, and thereby reduces the work hours involved in program de-
velopment.
The Ethernet Unit also supports FINS message communications, OMRON’s
standard communications service, so other OMRON PCs can be accessed by
using SEND(090), RECV(098), and CMND(490) instructions in ladder pro-
grams. In addition, the FINS gateway function can be used to allow access to
other PCs on not only the same Ethernet network but also on other networks
such as Controller Link and SYSMAC Link.
The Ethernet Unit has a built-in FTP server function, so any workstation or per-
sonal computer with an FTP client function can be used for reading files from or
writing files to the PC. This enables large amounts of data to be transferred at
one time without any need for writing a ladder program.
User-defined messages, Unit error information, status information, and so on,
can be sent from the PC to the mail server as e-mail. This function allows infor-
mation generated at the production site to be sent out as e-mail.
A 24-VDC power supply can be used as the power supply for the transceiver.
The Ethernet Unit voltage output provides for a voltage drop in the transceiver
cables, so there is no need to adjust the power supply voltage.
Ethernet, the information-system network, can be connected to Controller Link,
the control-system network, using the FINS communications service. This al-
lows a PC on the Controller Link network to be monitored from a PC on the Ether-
net network, and, conversely, for data to be exchanged between a PC on the
Controller Link network and a PC on the Ethernet network.
The Ethernet Unit is provided with a variety of troubleshooting functions for
prompt recovery in case of errors.
•
Self-diagnostic function at startup
•
PING command for checking remote nodes
•
Inter-nodal tests for checking remote nodes
•
Error log for recording error history data
•
E-mail notification when errors occur
Wide-ranging Control
Capability Using Ethernet
Communications by
UDP/IP and TCP/IP
Easy Use of Socket
Services
FINS Message
Communications
File Transfers Between
PC and Host Computer
(FTP Server Function)
E-mail Capability
24-VDC Power Supply for
Transceiver
Controller Link Network
Connection
Abundant
Troubleshooting
Functions
