Logic Configurable ModbusTCP in EcoStruxure Machine Expert HVAC

[DVarnerMinn]

Hello,

Does anyone know if there is a way within logic for an OEM application being written to be able to change the IP address of a ModbusTCP device?

I would like to be able to modify this from a embedded web page.

So far, I have not found a way to modify the CONNEC.PAR file that is downloaded (not recommended or desired) or found something like the ModbusMasterRTU functions for ModbusTCP.

Thanks

[FedericoM]

Hello,

target blocks which allow to send Modbus/TCP messages from background task will be added in the coming release of Ecostruxure Machine Expert HVAC 1.5.0 planned in July/August.

With the current version the only workaround is create runtime the CONNEC.PAR using the FS_IEC library and reboot the controller.

Actually M172 loads any file .PAR as a CONNEC.PAR, you could also remove the modbus/TCP part from the CONNEC.PAR and move it on a new file MTCPCLI.PAR which can be updated runtime by the M172

Federico

[DVarnerMinn]

@FedericoM 

Do you know if Machine Expert HVAC 1.5.0 would also allow the same thing for CANOpen?

It might be helpful for us to add or remove expansion I/O using one configurable program.

Thanks

[FedericoM]

In the next version 1.5.0, it will be added a target block which allow to read SDO (at the moment is available only write).

In the current version, you can define the maximum number of expansions your project might need.

If an expansion is not present is not causing any runtime delay. Just at boot you will have 10sec delay for each missing expansion.

Also this delay can be avoided by setting parameter CANExpPresenceByPar and rebooting the M172.

Regards,

Federico

[DVarnerMinn]

@FedericoM 

Do you know if there is a document on the FS_IEC library available?

I can figure out how to use the library but I like to know how and where to find the information.

Thanks

[Bastian_Schmitz · Accepted solution]

You could find here a documentation which describe the functions.

Link 

[FedericoM · Accepted solution]

@DVarnerMinn,

I have attached an example and a short draft document which explains how to create a project with Dynamic Ip settings of the Modbus TCP.

In the project you'll find also how the file is created using the FS_IEC library.

BR,

Federico

[DVarnerMinn]

Thanks, a few questions.

What is the difference between Free Evolution and Free Advance controllers?

I believe that M172P are the Free Advance models from the looks.

Where did you find this application note? I haven't looked at the Eliwell website enough to find application notes yet. (I am registered with the website.)

[DVarnerMinn]

@FedericoM 

Thanks, I will take a look at this.

I have found in the past that I can learn much from example logic from others no matter what the skill set I or others have.

[FedericoM]

Free Evolution is the Eliwell branded version of M171P, while Free Advance controller is the equivalent of M172P.

Actually this application note is quite old, it is available to customers with access to the restricted area of the Eliwell website.

It does not include the latest features included in Ecostruxure Machine Expert HVAC.

In terms of FS_IEC description, I think the contents are the same you have when you look at each block description inside the library.

[DVarnerMinn]

Getting to the restricted area is what I'm not easily finding.

I believe I might have some access to it but the link is on my work laptop and I don't go in until tomorrow.