CV500ETN01 Omron, CV500ETN01 Datasheet - Page 44

• 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

Executing CMND(490)
Improved TCP Socket
Interface
Overview of Communications Functions
A total of eight ports (UDP and TCP combined) can be used for socket ser-
vices.
Another way to use socket services is to request a UDP or TCP socket ser-
vice by sending a FINS command to the Ethernet Unit by executing
CMND(490) from the CPU Unit. When the Ethernet Unit receives the socket
service request, it returns a response to the CPU Unit to confirm that it
received the request, and then begins the requested processing. When the
processing is completed, the results are stored in the Results Storage Area in
the CPU Unit.
Eight TCP ports and eight UDP ports can be used.
The TCP socket interface has been improved. The size of received data accu-
mulated in the reception buffer is now stored, and a Data Received Flag has
been added, enabling the TCP socket's receive program to be executed after
the required data has been accumulated in the Ethernet Unit's reception
buffer. The keep-alive setting has also been enabled for TCP socket services.
UDP protocol
TCP protocol
TCP/UDP
protocol
CS/CJ-series
CPU Unit
CS/CJ-series
CPU Unit
TCP/UDP
protocol
TCP/UDP
protocol
Ethernet Unit
Ethernet Unit CS/CJ-series
UNIX computer, etc.
(node with socket
services interface)
Socket interface
UNIX computer, etc.
(node with socket
services interface)
Ethernet
Ethernet
Processing
results
FINS
commands
FINS
responses
Ethernet Unit
Ethernet Unit
Service request switch
CS/CJ-series
CPU Unit
CPU Unit
Parameters
Results Storage
Area
CMND
Section 1-5
19