Eaton XControl Modular PLC Complete Guide

5.2 Project Creation and Connection

First connection steps for XC-104/204

Connect the PC to the eth0 port of the device using an Ethernet cable

Set the PC IP address to the same network segment as the device (e.g. 192.168.119.xxx)

Connect the device power supply

Log in to the Device Web Configuration Tool through a browser (https://<Device IP>: 8375)

Set up SSH remote access

Activate USB interface and restore USB to factory settings

Set date and time

Configure network settings

XSOFT-CODESYS-3 connection steps

Create a new project and select the corresponding device model

Double click on the "Device (XC xxx)" device

Select the 'Communication' tab

Click on 'Search network' or enter the PLC IP address

Select the found device and click "Flash" to verify the device (LED flashing)

5.3 Task Configuration

XControl supports multitasking and can configure up to 50 tasks.

Task type

Loop task: Repeat execution at set intervals

Event triggered task: only executed when a specific event occurs

System event task: associated with system events such as PLC start, stop, reset, etc

Task priority

Range: 0 (highest) to 31 (lowest)

Tasks of the same priority are executed in rotation according to time slices

5.4 Interrupt Handling

The local inputs of XC-204 and XC-303 can be configured as interrupt inputs.

Configurable Interrupt

Falling edge trigger

Rising edge trigger

Any edge trigger

Interrupt library

Library Name: EA_XC303Events.lib

Function:

DisabInterrupt: Disable interrupts

Enable Interrupt: Enable interrupts

Precautions

POUs triggered by interrupts will not be time monitored

No response to new interrupts during interrupt execution

Frequent interruptions may cause task timeouts

5.5 Program Download and Startup

Program Download

After logging in online, confirm 'Load the new program?'

The 'Retain' variable is initialized during the loading process

The variable 'PERSISTENT' maintains its value

Create a boot application

Method 1: Online operation

After logging in, select the 'Create boot application' command

Method 2: Automatic generation

Enable 'Implicitly generate boot application during download' in the application properties

Guide the application to save

To SD card: Use PLC Shell command 'copyprojtsd'

To USB devices: Use the PLC Shell command 'copyprojtousb'

5.6 Debugging Function

Breakpoint/single step mode

Can set breakpoints in the application

Pause program execution at breakpoint

Note: The output that has been set when reaching the breakpoint remains in its current state

single-cycle mode

Real time execution of a program cycle

Output cancelled at the end of the cycle

compulsory

All user program tags can be forcibly assigned values

Local output can only be forced when the CPU is in RUN state and the corresponding variable is assigned a value

Chapter 6 Watchdog and Task Monitoring

6.1 Watchdog Principle

Watchdogs are used to monitor the execution time of tasks. Basic relationship:

Processing time<task interval time<watchdog time

If the processing time exceeds the interval time, the task will restart at the end of the second interval (the watchdog will not be activated)

If the processing time exceeds the watchdog time, the watchdog interrupts the program execution

6.2 Watchdog Configuration

Configurable parameters

Watchdog: enabled/disabled

Watchdog Time 

Watch dog sensitivity

Sensitivity Explanation

Sensitivity=1: Triggered immediately after exceeding the watchdog time

Sensitivity=x: Triggered after x consecutive times exceeding the watchdog time

6.3 Precautions for disabling watchdog

If the watchdog is disabled, the accessed output may remain active until the PLC switches from RUN to STOP or the output power is cut off when the task cannot be completed due to a program error (such as a dead loop).

Chapter 7 System Expansion

7.1 Local Expansion

Connect the XN300 module through the system bus for local expansion.

Configuration steps

Ensure that all XN300 modules are connected and powered on

In the XSOFT-CODESYS-3 project device tree, select "Device (XC xxx)"

Right click and select 'Add device...'

Select "XN300 Master" in the "Add device" dialog box

Select the XN300 module that is actually connected, in the same order as the physical connection

Optional device scanning function for automatic detection

7.2 Remote Expansion

Remote expansion through fieldbus interface:

CANopen extension

Using XN-312-GW-CAN CANopen gateway

Up to 32 XN300 modules per CAN node

Distance between PLC and gateway: depends on baud rate, maximum 1000 meters

EtherCAT extension

Using XN-312-GW-EC EtherCAT Gateway

Support SmartWire DT module connection

Chapter 8 Web Configuration Tool (XC-104/204)

8.1 Function Overview

The XC-104/204 series PLC provides a web-based configuration tool for basic system configuration. Access method:

URL: https://<Device IP>: 8375

Port: 8375

Protocol: HTTPS

8.2 Safety Features

2048 bit RSA key encryption

Generate key upon initial startup

Password requirement:

Minimum length of 8 characters

At least one number

At least 1 uppercase letter

At least 1 lowercase letter

At least 1 special character (! @ # $^&)