Chapter 1 Overview - Mitsubishi L02CPU User Manual

CHAPTER 1
The following describes the built-in Ethernet function of the CPU module.
(1) Connection with programming tool and GOT (
• By using a hub, the CPU module can be connected to multiple programming tools and GOTs. Up to 16
external devices can be connected to a single CPU module at the same time.
• When CPU modules and a programming tool are connected to the same hub, these CPU modules can be
searched from the programming tool. Displayed search results include IP addresses so that any of them can
be specified.
• MELSOFT connection allows access through routers in an environment such as a corporate LAN.
(2) Direct connection to programming tool (simple connection) (
CHAPTER 4)
The CPU module can be directly connected to a programming tool with a single Ethernet cable only, without
using a hub (simple connection).
For direct connection, the IP address and host name need not be specified in the transfer setup.
(3) MC protocol communication (
From an external device such as a personal computer or HMI, device data of the CPU module can be read or
written using MC protocol commands.
In addition, MC protocol messages (QnA-compatible 3E frame) can be sent from the CPU module to external
devices connected on the Ethernet network.
(4) Communications using the predefined protocol (
The predefined protocol function sends and receives packets predefined by using GX Works2, enabling easy
communications with external devices (such as measuring instruments and bar code readers). Protocol can be
either selected from the prepared predefined protocol library, or created and edited by users.
(5) Socket communication function (
By using instructions dedicated to socket communication, any data can be transferred from and to the external
devices connected through Ethernet using TCP or UDP.
(6) Time setting function (SNTP client) (
• Automatic time setting of the CPU module can reduce the maintenance cost for time setting.
• By sharing the same clock data among CPU modules connected to Ethernet via their built-in Ethernet ports,
the order of errors between processes can be traced, facilitating problem solving.
• Since the automatic time setting is enabled upon power-on of the CPU module, operations can be started
based on accurate clock data.
(7) File transfer function (FTP server) (
Each of the files stored in the CPU module can be read or written from the interfacing device with the FTP client
function, and a large amount of data can be easily transferred.
18
OVERVIEW
Page 34, CHAPTER 5)
Page 64, CHAPTER 7)
Page 119, CHAPTER 9)
Page 22, CHAPTER 3)
Page 53, CHAPTER 6)
Page 116, CHAPTER 8)
Page 31,