Machine Simulation Software (MS) Modbus RTU Serial RS485 Connection
Start the Machines Simulator software in start mode. We will be using the Easy Transfer Line scene.
Select the IO Drivers on the bottom menu.
Choose the ModbusDriver under the Driver Name dropdown list. The configuration button will allow you to specify your Modbus parameters.
The protocol can be selected for Modbus RTU Serial (RS232/RS485) or Modbus TCP Ethernet connection. We will use Modbus Serial.
Enter the port number and parameters for the PLC or PLC Simulator Software. The port number can be found under the device manager.
Select the starting addresses for the Digital and Analog inputs and outputs. Select OK.
Assign the Modbus address to the Machines Simulator by selecting Driver | Automatic Assignment.
Select Exit | Start Driver and Exit. This will now connect to the PLC. The indication is at the bottom of the screen.
Select View I/O to see the Modbus Address Tags. Now you can write your PLC program with the Machines Simulator.

USB to Serial RS485 Converter:
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EasyPLC Software Suite is a complete PLC, HMI, and Machine Simulator Software package.

This PLC learning package includes the following:
Easy PLC - PLC Simulation that will allow programming in Ladder, Grafcet, Logic Blocks, or Script.
HMI System - Easily create a visual human-machine interface (HMI),
Machine Simulator - A virtual 3D world with real-time graphics and physical properties. PLC programs can be tested using the EasyPLC or through other interfaces. (Modbus RTU, TCP, etc.)
Machine Simulator Lite - Designed to run on Android Devices.
Machine Simulator VR - Virtual Reality comes to life so you can test, train or practice your PLC programming.

Purchase your copy of this learning package for less than $75 USD for a single computer install, or less than $100 USD to allow different computers.
Receive 10% off the price by typing in ACC in the comment section when you order.

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System Requirements:
Minimum Hardware Requirements:
Processor: Compatible with the SSE2 instruction set
RAM: 1 Gb.
Disk Space: 2 Gb of free disk space.
Graphics card: Support DX9 (shader model 3.0) or DX11 with level 9.3 function
capabilities
A Sound card installed is necessary.

Operative System Compatibility:
Windows 7, 8, and 10. All 32 & 64 bits versions.
Machines Simulator Lite is designed for Android devices.

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