Fins Communications - Omron CP1H CPU Operation Manual

FINS Communications

9-5 FINS Communications
9-5-1 FINS Communications Service Specifications
Item
Number of nodes
Message Length
Date Length
Number of buffer
Protocol name
Protocol used
Number of connections
Port number
Protection
Other
Internal table
Note Refer to the following diagram for the relation between message length and date length.
FINS header
526
254
1016 bytes max.
1004 bytes max. (See note)
14 (1016 bytes×6+240 bytes×8)
FINS/UDP method
UDP/IP
The selection of UDP/IP or TCP/IP is made by means of the
FINS/TCP Tab in the CX-Programmer's Unit Setup.
---
9600 (default)
Can be changed.
No
Items set for each UDP port
• Broadcast
• Address conversion method
This is a table of correspondences for remote FINS node addresses, remote IP
addresses, TCP/UDP, and remote port numbers. It is created automatically when power is
turned ON to the PLC or when the unit is restarted, and it is automatically changed when
a connection is established by means of the FINS/TCP method or when a FINS command
received.
The following functions are enabled by using this table.
• IP address conversion using the FINS/UDP method
• Automatic FINS node address conversion after a connection is established using the
FINS/TCP method
• Automatic client FINS node address allocation using the FINS/TCP method
• Simultaneous connection of multiple FINS applications
10 bytes 2 bytes
Command code
Message length: 1016 bytes max.
Specification
FINS/TCP method
TCP/IP
2
9600 (default)
Can be changed.
Yes (Specification of client IP
addresses when unit is used as a server)
Items set for each connection
• Server specification
• Remote IP address spec.
Server: specify IP addresses of clients permitted to
connect.
• Automatic FINS node address allocation
Specify automatic allocation of client FINS node
addresses
1004 bytes max.
Date length
Section 9-5