
Chapter 1 Network Configuration
1 – 5
1.2 Network configuration for Communication module
An example of a network configuration using the communication module is shown below. Refer to each instruction for
detailed specification of each module.
(1) Ethernet module (EH-ETH)
If industrial equipments are connected to the information system network, it is useful for performing production
control, system operation monitor, facilities monitor, and maintenance smoothly.
1.EH-ETH is mounted in a basic base of EH-150 system and is a communication interface module to connect the
EH-150 system to Ethernet conformed to IEEE802.3.
2. EH-ETH connected to Ethernet functions as one station in the network.
And data can be exchanged between a personal computer and a server on the network.
Server
EHV system
PC
Ethernet
Figure 1.7 Example of Network configuration using Ethernet module
(a) 10 connections for transmitting and receiving of data can be used.
- There are 6 ASR connections for message communication and 4 connections for task code communication.
- Data can be transmitted and received by only one connection.
- One of TCP/IP and UDP/IP is selectable as a communication protocol which is used for each connection.
- Data up to 1454 bytes can be transmitted and received between PLC or the host.
(b) Simplifying a ladder program by Web server function for communication setting
and ASR function.
- Various settings for starting communication are performed using a general-purpose Web browser. Setting
information is stored on a built-in FLASH memory in EH-ETH as a file named “setup.dat”. This file is a text
file format.
- Man-hour to create a ladder program can be reduced drastically by using ASR function.
(c) Programming is possible from Control Editor.
- Programming and I/O monitor via Ethernet of EH-ETH are possible by using the Control Editor. Maintenances
of the program and the whole system improve by remote operation and monitor between PLC connected by
Ethernet.
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