Connecting The Cx-Programmer To Plcs Online Via Ethernet - Omron CP1H CPU Operation Manual

Ethernet Option Board Function Guide
9-1-2

Connecting the CX-Programmer to PLCs Online via Ethernet

Connecting within the
Same Segment
Connecting through
Multiple Segments
Using Media with
Unreliable Connections,
Such as a Wireless LAN
Connecting from a
Personal Computer with a
Dynamic Private IP
Address
Connecting through multiple segments, such as over the Internet:
Use FINS/TCP.
CX-Programmer
FINS
IP router
Firewall
Router
Ethernet Option Board
Use the UDP/IP version of the FINS communications service (i.e.,
FINS/UDP). FINS/UDP is supported by many OMRON products and is com-
patible with earlier Ethernet Units (CS1W-ETN01/ETN11/ETN21 and CJ1W-
ETN11/ETN21). The CX-Programmer can be connected and used with
FINS/UDP.
Use the TCP/IP version of the FINS communications service (i.e., FINS/TCP).
It provides automatic recovery at the TCP/IP layer from communications
errors (such as packet loss) that occur during multilevel routing. For CX-Pro-
grammer, FINS/TCP can be used to directly connect to the PLC online.
Use the TCP/IP version of the FINS communications service (i.e., FINS/TCP).
It provides automatic recovery at the TCP/IP layer from communications
errors (such as packet loss) resulting from unreliable connections. For CX-
Programmer, FINS/TCP can be used to directly connect to the PLC online.
Depending on whether or not the connection will be within the same segment,
either use an IP address conversion method for dynamic IP addresses in the
UDP/IP version of the FINS communications service or use the TCP/IP ver-
sion of the FINS communications service.
It is possible to connect online to a PLC using the CX-Programmer from a
computer serving as a temporarily connected node or a permanent DHCP cli-
ent.
For CX-Programmer, FINS/TCP can be used to directly connect to the PLC
online.
Internet
Intranet
(Office floor)
CX-Programmer
Ethernet
Router
(Production line)
Ethernet
PLC
Ethernet Option Board
Connecting from a computer with a dynamic private IP address:
Use FINS/TCP or FINS/UDP.
FINS
Ethernet
CX-Programmer
Connecting within the same segment:
Use FINS/UDP.
FINS
Wireless
PLC
CX-Programmer
FINS
Section 9-1
Using media with unreliable
connections, such as wireless
LAN: Use FINS/TCP.
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