Compatibility Limitations

After updating a project made in SoMachine V3.1 to EcoStruxure Machine Expert, the Advantys OTB DTM and the TM5-7 DTM may be unresponsive or unreliable.

If this happens, copy and paste the same DTM. The new node will work fine.

You can then remove the old DTM node.

In SoMachine V3.1 it was possible to use internal variables implicitly created when adding a CANopen slave to access some information on the state of the device. For example, MyOTB.nStatus or MyOTB.bSlaveAvailable.

These internal structures are no longer supported in EcoStruxure Machine Expert. Instead, use the GET_STATE function blocks of the CIA405 library to retrieve the state of your CANopen slaves.

The feature that allows you to map variables on single bits is only available for devices that have been created with EcoStruxure Machine Expert.

In EcoStruxure Machine Expert projects that have been updated from a version earlier than SoMachine V4.0, this feature is not available for the existing / updated devices.

To make the feature available for these devices, create a new device node and delete the old one.

If you use the 3S CanOpenStack library in your project, the following Build error may be detected and displayed in the Messages view:

C0035: Program name or function block instance expected instead of 'xxx'. where 'xxx' is a POU inside your project (for example, a POU named START or STOP).

As the library 3S CanOpenStack is of the category Intern (not intended for direct usage), it is a best practice to enable the option Only allow qualified access to all identifiers in the Properties dialog box of this library for overcoming the Build error.

When you update a SoMachine V3.1 project, the message The POU xxx is no longer available within your compiled application but it is still configured in the symbol configuration may be displayed in the Messages view. It indicates that variables defined in a GVL of a library are not correctly shared in the symbol configuration editor.

To share again this variable in the symbol configuration, proceed as follows:

In SoMachine V3.1, a Remote Connection tool is available for connecting to controllers in remote subnets.

In EcoStruxure Machine Expert, connections to controllers in remote subnets are established with the Communication Settings tab in controller selection mode of the device editor by using the Connection Mode types for Remote TCP . For connections via OPC, use the Static Remote Connections tab of the Gateway Management Console.

In EcoStruxure Machine Expert, connections to controllers in remote subnets can be established from the Static Remote Connections tab of the Gateway Management Console. To open the Gateway Management Console, right-click the gateway icon in the Windows notification area. For further information, refer to the Gateway Management Console User Guide online help.

When you build a SoMachine or SoMachine Motion application (created with SoMachine V3.1 or earlier), with EcoStruxure Machine Expert, the message Direct Address %M?n malformed may be displayed if you use direct addresses of the type myvar AT %Mn : BOOL in your variable declarations.

You can skip this message by selecting Ignore.

In any case, this usage will lead to Build errors that will be displayed in the Messages view.

To avoid these Build errors, replace the address declaration by the type myvar AT %MXn.0 : BOOL.

Starting from firmware V4.0.4.x (SoMachine V4.1 SP2) for M251MESE and V4.0.5.x (SoMachine V4.2) for M241 and M251MESC, the EtherNet/IP adapter service has the following limitations:

• The File Object is removed.

• The Modbus Object is removed.

• The value displayed for the RPI (Requested Packet Interval) parameter is not valid for M251MESE with SoMachine earlier than V4.1SP2 and for M241 with SoMachine earlier than V4.2.

• The RUN/IDLE status of the PLC_R structure is not valid.

• The UCMM (Unconnected Message Manager) Error Count and Class 3 Error Count of the PLC_R structure are not valid.

When you update an application from SoMachine V4.2 to EcoStruxure Machine Expert, this may lead to a different M241 Logic Controller / M251 Logic Controller behavior on the TM3 bus:

To preserve the behavior of SoMachine V4.2, set the parameter TM3_BUS_W_IOBUSERRMOD to IOBUS_ERR_PASSIVE. For further information, refer to the M241 / M251 PLCSystem Library Guide.

Read/Write (FUNC23) used in Modbus IOScanner for Serial Line in SoMachine V3.1 or earlier is not automatically transformed to Read (FUNC03) and Write (FUNC16) in EcoStruxure Machine Expert if the slave does not support the Read/Write function.

Modify the application manually by separating the Read/Write function into one Read and one Write.

Whenever you update a SoMachine or SoMachine Motion project file containing devices for which no new device description files are installed in the present EcoStruxure Machine Expert device repository, these devices are not recognized by EcoStruxure Machine Expert. This applies in particular to devices imported from EDS files.

To avoid this, install these devices before updating your project. For further information, refer to the chapters Using Existing SoMachine or SoMachine Motion Projects with EcoStruxure Machine Expert and Migration Considerations.

If you have renamed parameters of a POU for a library between versions, the old parameter names will still be used in the POU code.

In order to use the new parameter names, execute the Update Parameters command manually on the corresponding POU call usage.

For a description of this command, refer to the SoMachine Menu Commands Online Help section of the EcoStruxure Machine Expert Online Help.

When updating a project created with SoMachine or EcoStruxure Machine Expert V1.2.x or earlier versions, slider elements used in Web Visualizations may be displayed without a scale.

This is because, for compatibility reasons, existing sliders are not updated automatically during the project update. To update the element manually, update the scale proportion property of the slider by editing the property and accepting the present value.

For sliders without a scale, the show scale property has to be temporarily set.