Name: WAGO 750 Series
Brand: WAGO
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Application Examples • 177

Example Program for a CGI Application

WAGO-I/O-SYSTEM 750

Linux Fieldbus Coupler

8.4 Example Program for a CGI Application

Program names:

web, info, ether, kernelmsg, eeprom, config, restart

Installation directory: /var/www

index.html

upperframe.html

menuframe.html

Installation directory: /var/www/cgi-bin

web

info (symbolic link web)

ether (symbolic link web)

kernelmsg (symbolic link web)

eeprom (symbolic link web)

config (symbolic link web)

restart (symbolic link web)

Source code files:

~/uclinux-dist/user/wagoweb/html/index.html

~/uclinux-dist/user/wagoweb/html/upperframe.html

~/uclinux-dist/user/wagoweb/html/menuframe.html

~/uclinux-dist/user/wagoweb/web.c

~/uclinux-dist/user/wagoweb/info.c

~/uclinux-dist/user/wagoweb/ether.c

~/uclinux-dist/user/wagoweb/kernelmsg.c

~/uclinux-dist/user/wagoweb/eeprom.c

~/uclinux-dist/user/wagoweb/config.c

~/uclinux-dist/user/wagoweb/restart.c

Function description

This example program implements the web-based management (WBM) of the

Linux fieldbus coupler.

The web server BOA uses the CGI files/programs. The HTML pages come

directly from the web server.

The CGI file web can be called via different symbolic links. The name of the

link is analyzed in the file and has a direct effect on the HTML output. The

links described above are essential in order to execute the functions. This type

of CGI call administration is ideal if you only want to need little memory in

the file system for the files to be called. It is furthermore possible to exchange

the entire functionality of the CGI calls by only replacing one file (see also

chapter 4.5.5).

Other manuals for WAGO 750 Series

System Manual56 pages

Instruction Manual46 pages

Questions and Answers:

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WAGO 750 Series Specifications

General

Protection Class	IP20
Bus Couplers	PROFIBUS, CANopen, Ethernet
Modules	Digital Input, Digital Output, Analog Input, Analog Output
Mounting	DIN rail mounting
Voltage Supply	24 V DC (typical)
Communication Protocol	Depends on the bus coupler (e.g., PROFIBUS, CANopen, DeviceNet, Ethernet)
Digital Input Channels	Varies by module (e.g., 8, 16 channels)
Digital Output Channels	Varies by module (e.g., 8, 16 channels)
Analog Input Channels	Varies by module (e.g., 2, 4, 8 channels)
Analog Output Channels	1, 2, 4 channels (depending on module)
Width	12 mm, 24 mm (typical module widths)
Number of Channels	Varies by module type
Current Consumption per Channel	Varies by module type