172
FINS Communications
Section 6-5
6-5
FINS Communications
6-5-1
FINS Communications Service Specifications
Note
(1) Refer to the following diagram for the relation between message length
and date length.
(2) The FINS/UDP and FINS/TCP port numbers for CX-Programmer Auto
Connection are always set to 9600, although the FINS/UDP and FINS/
TCP port numbers for user are set to other values.
Item
Specification
Number of nodes
254
Message Length
1016 bytes max.
Date Length (See note 1.)
1004 bytes max.
Number of buffer
16
Protocol name
FINS/UDP method
FINS/TCP method
Protocol used
UDP/IP
TCP/IP
The selection of UDP/IP or TCP/IP is made by means of the FINS/UDP or FINS/TCP but-
ton in Built-in Ethernet Tab in the CX-Programmer's PLC Setup.
Number of connections
---
3 for user, 1 for CX-Programmer auto connection
Port number (See note 2.)
9600 (default)
Can be changed.
9600 (default)
Can be changed.
Protection
No
Yes (Specification of client IP
addresses when unit is used as a server)
Other
Items set for each UDP port
• Broadcast
• Address conversion method
Items set for each connection
• Server/client specification
• Remote IP address specification
Server: Specify IP addresses of clients permitted to
connect.
Client: Specify remote Ethernet Unit (server) IP
address.
• Automatic FINS node address allocation:
Specify automatic allocation of client FINS node
addresses.
• Keep-alive:
Specify whether remote node keep-alive is to be used.
Internal table
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
Date length
Command code
1004 bytes max.
FINS header
Message length: 1016 bytes max.
Содержание CP1L-EL20DR-D
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Страница 22: ...xxii...
Страница 34: ...xxxiv Software Licenses and Copyrights 7...
Страница 178: ...144 Connecting the CX Programmer Section 5 1 Click the Connect button to connect and then connection online is completed...
Страница 192: ...158 Trial Operation and Debugging Section 5 3...
Страница 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Страница 666: ...632 Trouble Shooting Section 11 7...
Страница 696: ...662 Standard Models Appendix A...
Страница 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Страница 836: ...802 PLC Setup Appendix G...
Страница 838: ...804 TCP Status Transitions Appendix H...
Страница 840: ...806 Ethernet Network Parameters Appendix I...
Страница 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Страница 844: ...810 Ethernet Specifications Appendix K...
Страница 851: ...Index 817 work words 118 write protection 447...
Страница 852: ...818 Index...
Страница 854: ...820 Revision History...
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