Simulation : PLC (Siemens) and HMI (Eaton/Moeller with Galileo)

This post is following the one on Siemens PLC simulation with PlcSim.

1. PlcSim

We need a running program on PlcSim. PlcSim has to use the PLCSIM(TCP/IP) interface and has to be listening on the same IP as the computer.

Here a DB with one bit that is toggled every second :

Your PLC side is ready !

2. NetToPlcSim Software

2.1 Install

To allow Galileo and PlcSim to communicate we need a third party software that will act as a gateway : NetToPlcSim (OpenSource).

Download from : http://sourceforge.net/projects/nettoplcsim/

2.2 Startup

At startup, it’ll ask to close the service using the port 102 :

If NetToPlcSim fail to close this service, you might do it manually (as administrator) :

2.3 Configuration

We need to “add” a new server:

The pamameters window :

We start by the “Network IP Address”, use the “…” and choose your computer IP :

Then do the same for the PlcSim IP (PlcSim has to be running) :

Your configuration should now looks like this :

Then we can click on “Start” to start the server:

Your gateway is ready !

3. Galileo Software (HMI)

Create a new project :

The panel has to support Ethernet as we’ll use this for the communication between the PLC and HMI :

For the PLC IP, use the same as for PlcSim :

Create a new mask :

Create a new byte and not a bit (see below)

Why a byte and not a bit ?
Read and write 1 bit is not supported by Galileo via Ethernet. If you try to do so, you’ll have the following message when compiling :
ERROR: bit ‘MyBit’:the size of 1 bits is not supported (increase to 8 bits) — PLC ‘Siemens – Industrial Ethernet’

Then we can map our byte to our bit in our DB :

Create a new value display/entry :

And map it to our byte :

Save and then compile :

And we can start the simulation :

Booting step :

And simulation running :