User Communication Via Ethernet Communication - IDEC FC6A-C16K1CE Communications Manual

User Communication via Ethernet Communication

This section describes the Ethernet user communication. Ethernet user communication works on TCP/IP protocol. The FC6A Series
MicroSmart can be used as a user communication client/server. With Ethernet user communication instructions (ETXD and ERXD
instructions), the FC6A Series MicroSmart 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 "TXD (Transmit)" on page 5-2 and "RXD (Receive)" on page 5-10.
Ethernet User Communication Overview
The FC6A Series MicroSmart 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 FC6A Series MicroSmart user communication client, the FC6A Series MicroSmart can access and communicate with
the server devices using the protocol of the server device. A maximum of eight client connections of the FC6A Series MicroSmart
can be allocated to user communication.
User communication client functions and configuration are described in "To use the FC6A Series MicroSmart as a user
communication client" on page 5-36. User communication server functions and configuration are described in "User
Communication Server" on page 5-40.
The FC6A Series MicroSmart supports the TCP/IP protocol.
The FC6A Series MicroSmart 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 FC6A Series MicroSmart can be used as both an Ethernet user communication client and server.
Each of the eight connections possessed by the FC6A Series MicroSmart 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
FC6A Series MicroSmart function area settings connection settings
Connection Communication Protocol
1 Modbus TCP client
2 User communication client
3 Maintenance communication server
User communication
client for remote host 2
using connection 2
Ethernet user communication
Port number 502 is
the Modbus
communication
server port
Destination: Remote host 1
Destination: Remote host 2
Port number: 2101
FC6A S M S A
ERIES ICRO MART LL
5: U
Port number 2101 is
the maintenance communication
server port
Port number 6789 is
PV
OUT
A1
AT the data communication
SV A2
HB server port
OUT
MODE
OFF
XXX - X00
Other Settings
- -O T C
IN NE YPE OMMUNICATION
C
SER OMMUNICATION
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
M FC9Y-B1730
ANUAL
I
NSTRUCTIONS
Port
Number
502
6789
5-35