Access Function To Programmable Controller; Availability Of Communication Library And Sample Screen - Mitsubishi Electric MELSEC-Q Series User Manual

1.2

Access Function to Programmable Controller

By using the Web function, the programmable controller data can be collected or updated, the CPU module operation
can be monitored, and the status control of the CPU module can be performed in order to control and monitor the
equipment on the programmable controller side using a Web browser.
*1 With the Web function, exchange of information between the Ethernet module and the Web server, and between the
Web server and the Web browser is performed via HTTP.
With the Web function, the programmable controller is accessed by sending/receiving messages of the MC protocol,
which are used for communication between the programmable controller and the external device, via HTTP.
1.3
Availability of Communication Library and Sample
Screen
(1) The Web function can be used by installing the following:
Classification
Programmable controller side
Server computer
(Web server)
Device on the Web browser side
(2) A sample screen (HTML files, ASP files) is provided. It is used to check the
access function to the programmable controller using the communication
library and the Web function. Contact your local agency or marketing
company.
(a) The user can easily create ASP files in order to access the programmable controller
by using the communication library.
In addition, the result of access to the programmable controller using ASP files can arbitrarily be displayed on
the Web browser using user-created HTML files.
Ethernet module
12
Required device/software
Ethernet module
Web server
Communication library
ASP files
HTML files
Web browser
HTTP
MC protocol
(Command message)
header
HTTP
MC protocol
(Response message)
header
*1
Subject module of this manual
Page 16, Section 2.1 (4)
Page 12, Section 1.3 (2)
Files created by the user to be used for accessing
the programmable controller
Files created by the user to be used for displaying
the Web browser
Page 16, Section 2.1 (4)
Web server
HTTP
HTML
Execution
ASP
of the ASP file
Communication
library
Description
External device
Web browser
Display of
requests/results