Omron CP1H CPU User Manual

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Ethernet Option Board Function Guide Section 9-1
9-1-3 Receiving Data from OMRON PLCs using Ethernet
The CP1W-CIF41 Ethernet Option Board can only support receiving FINS
commands from OMRON PLCs using Ethernet.
Connecting within the
Same Segment
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/ETN21 and CJ1W-ETN11/ETN21). The protocol pro-
cessing 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 broadcasting.
On the other hand, with FINS/UDP it is necessary to provide measures, such
as retries, for handling communications errors.
Connecting through
Multiple Segments
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 Option Board (CP1W-CIF41). It provides auto-
matic recovery at the TCP/IP layer from communications errors (such as
packet loss) that occur during multilevel routing.
Intranet
Production line A
Ethernet Unit
Ethernet
Router
FINS message
communications
Connecting through multiple segments:
Use FINS/TCP.
Production line B
Router
Ethernet Option Board
Ethernet Option Board
Only receiving FINS commands via
Ethernet from OMRON PLCs
PLCPLC

Omron CP1H CPU Specifications

General

Brand	Omron
Model	CP1H CPU
Category	Computer Hardware
Language	English