Fieldbus Coupler / Controller; Fieldbus Coupler 750-342 - WAGO -I/O-SYSTEM 750 User's Installation And Configuration

3 Fieldbus coupler / controller

3.1 Fieldbus coupler 750-342

This chapter includes:
3.1.1
3.1.2
3.1.2.1
3.1.2.2
3.1.2.3
3.1.2.4
3.1.2.5
3.1.2.6
3.1.3
3.1.4
3.1.4.1
3.1.4.2
3.1.4.3
3.1.5
3.1.5.1
3.1.5.2
3.1.5.3
3.1.6
3.1.6.1
3.1.6.2
3.1.6.3
3.1.6.4
3.1.6.5
3.1.6.6
3.1.7
3.1.7.1
3.1.7.2
3.1.7.3
3.1.7.4
3.1.8
3.1.8.1
3.1.8.2
3.1.9
Modular I/O System
ETHERNET TCP/IP
Description ..................................................................................... 18
Hardware ........................................................................................ 19
View......................................................................................... 19
Device supply .......................................................................... 20
Fieldbus connection ................................................................. 20
Display elements...................................................................... 21
Configuration interface ............................................................ 21
Hardware address (MAC-ID) .................................................. 21
Operating system ............................................................................ 22
Process image ................................................................................. 23
Example of a process input image ........................................... 24
Example of a process output image ......................................... 25
Process data architecture for MODBUS/TCP ......................... 26
Data exchange................................................................................. 31
Memory areas .......................................................................... 32
Addressing ............................................................................... 32
Data exchange between MODBUS master and I/O modules .. 34
Starting up ETHERNET TCP/IP fieldbus nodes............................ 35
Note the MAC-ID and establish the fieldbus node.................. 35
Connecting PC and fieldbus node............................................ 35
Determining IP addresses ........................................................ 36
Allocating the IP address to the fieldbus node ........................ 36
Testing the function of the fieldbus node ................................ 39
Reading out the information as HTML pages.......................... 40
LED Display ................................................................................... 41
Blink code................................................................................ 41
Fieldbus status ......................................................................... 42
Node status............................................................................... 42
Fault message via blink code from the I/O-LED ..................... 43
Fault behavior................................................................................. 45
Fieldbus failure ........................................................................ 45
Internal bus fault ...................................................................... 45
Technical Data................................................................................ 46
Fieldbus coupler / controller • 17
Fieldbus coupler 750-342