Remote I/O; Ethernet Communication - IDEC FT1A Series User Manual

Remote I/O

The remote I/O of the SmartAXIS enables you to expand the number of inputs and outputs by connecting separate SmartAXIS
modules over Ethernet as remote I/O slaves when you run out of inputs and outputs. The SmartAXIS remote I/O master can use
the digital inputs and outputs and analog inputs on the remote I/O slaves.
This function can be used on the Ethernet port only. Remote I/O cannot be used with the expansion communication ports (RS232C
and RS485).
Remote I/O System Example
•
A SmartAXIS is connected to an Ethernet network as a remote I/O master. Two other SmartAXIS are used as remote I/O slaves.
Up to a maximum of 3 SmartAXIS can be connected to a remote I/O master as remote I/O slaves.
Master
48-I/O type
48-I/O type (master) + 48-I/O type (slave)
(30 inputs, 18 outputs)+ (30 inputs, 18 outputs) + (30 inputs, 18 outputs)
= 90 inputs, 54 outputs

Ethernet Communication

The SmartAXIS can be connected to the Ethernet network via Ethernet port and communicate with network devices over Ethernet.
The SmartAXIS has three TCP/IP connections that can be used for Ethernet communication functions. Each of these connections
can simultaneously be used for a different communication protocol. Each connection can be configured for maintenance
communication, user communication, Modbus TCP, or remote I/O master.
Ethernet Communication Example
•
This example shows a system in which a SmartAXIS communicates with another SmartAXIS, an operator interface, and a
computer simultaneously over Ethernet. Among the three connections the SmartAXIS has, Connection 1 is configured as
maintenance communication for the computer to communicate with the SmartAXIS. Connection 2 is configured as Modbus TCP
server for the operator interface to communicate with the SmartAXIS. Connection 3 is configured as the remote I/O master to
communicate with another SmartAXIS.
SmartAXIS
Notes:
When accessing the SmartAXIS over the Internet, adequate safety measures are required. Be sure to consult your network administrator or
•
Internet service provider. IDEC bears no responsibility for damages or problems caused due to security in Ethernet communication.
Restrict the access to SmartAXIS with IP addresses and ports by using appropriate measures such as the firewall.
•
Slave
48-I/O type
Ethernet
Ethernet Hub
Ethernet port
S AXIS P
MART RO
Ethernet hub
+ 48-I/O type (slave)
SmartAXIS
/L U ' M FT9Y-B1378
ITE SER S ANUAL
1: G
ENERAL
Slave
48-I/O type
Ethernet Hub
Operator interface Windows computer
I
NFORMATION
1-9