User Communication Via Ethernet Communication - IDEC FT1A Series User Manual

10: U C
SER OMMUNICATION

User Communication via Ethernet Communication

This section describes the Ethernet user communication. Ethernet user communication works on TCP/IP protocol. The SmartAXIS
can be used as a user communication client/server. With Ethernet user communication instructions (ETXD and ERXD instructions),
the SmartAXIS can exchange the data with devices on the network.
Except for the port number and the allocation of the user communication receive instruction cancel flags, Ethernet user
communication instructions (ETXD and ERXD instructions) are identical to TXD and RXD instructions. For details about TXD and
RXD instructions, see Chapter 25 "User Communication Instructions" in the SmartAXIS Ladder Programming Manual.
Ethernet User Communication Overview
The SmartAXIS can be used as an Ethernet user communication client/server. It can be used simultaneously with the maintenance
communication server, Modbus TCP server, and Modbus TCP client.
When using the SmartAXIS user communication client, the SmartAXIS can access and communicate with the server devices using
the protocol of the server device. A maximum of three client connections of the SmartAXIS can be allocated to user
communication.
User communication client functions and configuration are described in "To use the SmartAXIS as a user communication client" on
page 10-15. User communication server functions and configuration are described in "User Communication Server" on page 10-19.
The SmartAXIS supports the TCP/IP protocol.
The SmartAXIS can send data to and receive data from devices on a network by using the ETXD (Ethernet user communication
transmit) instruction and the ERXD (Ethernet user communication receive) instruction.
The SmartAXIS can be used as both an Ethernet user communication client and server.
Each of the three connections possessed by the SmartAXIS can be allocated to different types of communication. Ethernet user
communication can simultaneously use the maintenance communication server, Modbus TCP server, and Modbus TCP client.
[Ethernet communication example using three connections]
Modbus TCP client for
remote host 1 using
connection 1
SmartAXIS function area settings connection settings
Connection Communication protocol
1 Modbus TCP client
2 User communication client
3 Maintenance communication server
10-14
I
NSTRUCTIONS
User communication
client for remote host 2
using connection 2
Ethernet user communication
Port number 502 is
PV
the Modbus
communication
server port
Destination: Remote host 1
Destination: Remote host 2
Port number: 2101
S AXIS P
MART RO
Port number 2101 is
the maintenance communication
server port
Port number 6789 is
OUT
A1
AT the data communication
SV A2
HB server port
OUT
MODE
OFF
XXX - X00
Other settings
/L U ' M FT9Y-B1378
ITE SER S ANUAL
Maintenance communication
server using connection 3
Perform host
communication on
SmartAXIS
maintenance
communication port
number 2101
Remote host table
Remote host
IP address
number
1 192.168.0.12
2 192.168.0.13
Port
number
502
6789