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1-6
Section
Software Configuration
7
Dimensions
(16.5 including cover)
(Unit: mm)
1-6
Software Configuration
The software supported by the Ethernet Unit runs in the layers shown in the fol-
lowing diagram. The components that form the various layers are defined below
the diagram.
CS1-series PC’s CPU
Memory Card/
EM File Memory
FINS
FTP server
UDP
TCP
IP
Ethernet (V2.0)
ICMP
ARP
FINS Communication
Service
Socket
Services
CS1-series PC’s CPU Unit
Ethernet Unit
Socket
Services
SMTP
FTP
Mail
transmissions
Ethernet
The Version-2.0 Ethernet frame format is used for communications.
IP
Internet Protocol: Transfers datagrams to target nodes using IP addresses.
ICMP
Internet Control Message Protocol: Supports IP communications by signalling
errors in data transfers.
ARP
Address Resolution Protocol: Determines the Ethernet address (i.e., physical
address) by broadcasting based on the target IP address.
UDP
User Datagram Protocol: Performs datagram communications. Data resends,
priority control, flow control, and other measures to ensure communications reli-