Fins Frames - Omron CS1W-ETN11 Operation Manual

Sending Commands From a Host Computer
Example 1: Intranetwork
Addressing
Example 2: Internetwork
Addressing
Host computer
IP address: 196.36.32.50
FINS network/node/unit: 1/50/0 hex)
5-4-2

FINS Frames

In this example, the host computer and the remote node (Ethernet Unit) are
on the same network. The communications parameters specified from the
host computer would be as follows:
Destination IP Address: 196.36.32.100 (Ethernet Unit of remote node)
UDP port number:
FINS addresses (Remote node CPU Unit):
Network number:
Node number:
Unit number:
FINS addresses (Host computer):
Network number:
Node number:
Unit number:
Host computer
IP address: 196.36.32.50
FINS network/node/unit: 1/50/0 (Hex)
In this example, the host computer and the remote node (Ethernet Unit) are
on different networks, connected by a relay node. The communications
parameters specified from the host computer would be as follows:
Destination IP Address: 196.36.32.100 (Ethernet Unit of relay node)
UDP port number:
FINS addresses (Remote node CPU Unit):
Network number:
Node number:
Unit number:
FINS addresses (Host computer):
Network number:
Node number:
Unit number:
Relay node
IP address: 196.36.32.100
Ethernet Unit
Ethernet
The FINS communications service is carried out through the exchange of
FINS command frames and their corresponding response frames. (There are
also commands with no responses.)
Both command frames and response frames are comprised of a FINS header
for storing transfer control information, a FINS command field for storing a
command, and a FINS parameter/data field for storing command parameters
and transmission/response data.
FINS UDP port No. (Ethernet Unit of remote node)
1
100
0
1
50
0
Remote node
IP address: 196.36.32.100
FINS network/node/unit: 1/100/0 (Hex)
Ethernet
FINS UDP port number (Ethernet Unit of relay node)
2
1
0
1
50
0
Remote node
FINS network/node/unit: 2/1/0 (Hex)
Controller Link
Controller Link Unit
Section 5-4
97