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No. 1749 Re: Re: Re: Re: Re: Re: RS422 converter 2020-07-21

Hello,

Please see the attached file

Thanks for responding so fast.


> Johan wrote:
> ------------------------------------
> Good morning,
>
> Sorry for the misunderstanding.
> Please look at the attached file.
> This is the configuration of the HMI.
>
> Feel free to ask more information.
>
> gr. Johan
>
>
> > Sollae Systems wrote:
> > ------------------------------------
> > Dear Johan ,
> >
> > Thank you for your information.
> >
> > As we can see from the documents you sent, these devices are using Modbus protocol to communicate with each other.
> > In this case, instead of normal RS422 to Ethernet Converter, we should use Modbus gateway to make these products communicate with each other via Internet/LAN.
> > The Modbus gateway helps to convert Modbus Serial to Modbus TCP and vice versa.
> > We recommend you to use SMG-5420 (RS422/485 Modbus Gateway) in your project.
> >
> > Since HMI Monitouch supports both Modbus Serial and Modbus TCP, there are three possible ways to install your network.
> >
> > Topology 1:
> >
> >
> >
> > - Advantage: require only one Modbus gateway to connect to 4 HMI Screens.
> > - Disadvantage: The distance between four HMI screens is limited due to RS422 characteristics.
> >
> > Topology 2:
> >
> >
> >
> > - Advantage: The distances between four HMI screens have no limit.
> > - Disadvantage: require four Modbus gateways to connect to 4 HMI Screens.
> >
> > Topology 3:
> >
> >
> >
> > - Advantage: The distances between four HMI screens have no limit. The connections between 4 HMI Screens require no additional Modbus Gateway => cost efficiency.
> >
> > If you use topology 3, you may need to configure the HMI screen to use Modbus TCP.
> >
> > Please note that the current firmware of SMG-5420 (RS422/485 Modbus Gateway) only supports a single TCP connection.
> > It means at the one time, it only accepts the connection from one device. So right now Topology 1 is a suitable solution.
> > Fortunately, we are going to release a new firmware that supports multi-connection. It means all Topology 1, Topology 2, and Topology 3 can be used.
> >
> > The exact release date of the new firmware is yet not fixed but will be within a month from now.
> >
> > I hope the above is useful to you.
> > Please feel free to contact me if you need any further information.
> >
> > Thank you,
> >
> > Best regards,
> >
> > Khanh,
> > Sollae Systems's Technical Support Team
> >
> > > Johan wrote:
> > > ------------------------------------
> > > See the attached files
> > >
> > > gr. Johan
> > >
> > >
> > > > Johan wrote:
> > > > ------------------------------------
> > > > Good morning,
> > > >
> > > > Please see the attachment file for information.
> > > >
> > > > gr. Johan
> > > >
> > > >
> > > > > Sollae Systems wrote:
> > > > > ------------------------------------
> > > > > Dear Johan,
> > > > >
> > > > > Thank you for your interest in our products.
> > > > >
> > > > > It is possible to use our products to make the connection between a Mitsubishi PLC and a Monitouch HM over Ethernet.
> > > > >
> > > > > You may need to choose the product depends on how Mitsubishi PLC and a Monitouch HM interact with each other.
> > > > > In case of using Modbus RTU or ASCII, Modbus Gateway can be used.
> > > > > In other cases, RS422 to Ethernet converters can be used.
> > > > >
> > > > > To choose the right products, please check which protocol Mitsubishi PLC and a Monitouch HM interact with each other.
> > > > > If you can send us the model name of the devices in your system and the protocol you are using, we could provide a more detailed suggestion.
> > > > >
> > > > > We hope the above is useful to you.
> > > > > Please feel free to contact us if you need any further information.
> > > > >
> > > > >
> > > > > > Johan wrote:
> > > > > > ------------------------------------
> > > > > > Hello.
> > > > > >
> > > > > > Normally we have a RS422 4-wire connection between a Mitsubishi PLC and a Monitouch HMI.
> > > > > >
> > > > > >
> > > > > > case:
> > > > > > Is there a possibility to connect more HMI'ss with RS422(4wire), on one PLC with RS422 connection, using RS422 to Ethernet converters.
> > > > > >

Writer Johan Company Teunis Industrie