CV500ETN01 Omron, CV500ETN01 Datasheet - Page 29
CV500ETN01
Manufacturer Part Number
CV500ETN01
Description
Programmable Logic Controller
Manufacturer
Omron
Datasheet
1.CV500ETN01.pdf
(285 pages)
Specifications of CV500ETN01
Peak Reflow Compatible (260 C)
No
Leaded Process Compatible
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Ethernet Unit Function Guide
Reference
Exchanging Data between OMRON PLCs using Ethernet
Connecting within the
Same Segment
Connecting through
Multiple Segments
4
CX-Programmer
Connecting through multiple segments, such as over the Internet:
Use FINS/TCP.
IP router
Firewall
FINS
Router
(Server room)
Internet
Ethernet
Ethernet Unit
SECTION 6 FINS Communications
Use the UDP/IP version of the FINS communications service (i.e., FINS/
UDP), and construct applications using the SEND(090), RECV(098), and
CMND(490) instructions in the ladder program. FINS/UDP is supported by
many OMRON products, and is compatible with earlier Ethernet Units (CS1W-
ETN01/ETN11 and CJ1W-ETN11). The protocol processing for FINS/UDP is
simpler than for FINS/TCP, giving FINS/UDP certain advantages in terms of
performance. Another feature of FINS/UDP is that it can be used for broad-
casting.
On the other hand, with FINS/UDP it is necessary to provide measures, such
as retries, for handling communications errors.
Use the TCP/IP version of the FINS communications service (i.e., FINS/TCP),
and construct applications using the SEND(090), RECV(098), and
CMND(490) instructions in the ladder program. FINS/TCP is the initial func-
tion supported by this Ethernet Unit (CS1W-ETN21 and CJ1W-ETN21). It pro-
vides automatic recovery at the TCP/IP layer from communications errors
(such as packet loss) that occur during multilevel routing.
Ethernet
(Production line)
Intranet
Router
CX-Programmer
(Office floor)
Ethernet Unit
Connecting from a computer with a dynamic private IP address:
Use FINS/TCP or FINS/UDP.
PLC
FINS
CX-Programmer
Ethernet
Wireless
FINS
FINS
Connecting within the same segment:
Use FINS/UDP.
CX-Programmer
Using media with unreliable
connections, such as wireless
LAN: Use FINS/TCP.
Section 1-1
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