Modbus TCP over GPRS (S27x GPRS RTU)

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This topic contains 10 replies, has 3 voices, and was last updated by Mikhail Mikhail 2 months, 2 weeks ago.

Viewing 11 posts - 1 through 11 (of 11 total)
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  • #3973

    rsepulve
    Participant

    Hi, Mikhail.
    I´m newer in Rapid Scada, about 6 month using it. It is great app.
    I´ve connect some PLCs and RTU M120T with success.
    But now I’m trying to connect 3 different models of over GPRS MODBUS TCP IP RTU.
    S272 from King Pigeon.
    WCT5018 from
    F2864 from Four Faith.
    But I don´t know how to configure the Communicator Channel in Modbus.
    I´cant poll the devices because the layout of GSM networks, only the RTU can send data to central server.
    I would like to ask if you have experience in that matter and if you have some tips to do that.
    If you want I can sent to you the manual, protocol structure and other things.
    Best regards.
    Thanks.

    Rodrigo Sepúlveda from Chile.

    #3974
    Mikhail
    Mikhail
    Moderator

    Hi Rodrigo,

    Usually a modem is TCP client while Communicator is TCP server. You should set the TCP server type of communication channel in Communicator and allow the incoming connection on Firewall. Setup a modem to connect to the IP or DNS name and TCP port of your server. You will see that a connection is established in a communication line log. If connection is OK, Communicator polls the devices.

    If something goes wrong, provide logs of the communication line.

    #3998

    rsepulve
    Participant

    Hi Mikhail,
    Thanks for the information, but my problem is IP addressing.
    For server no problem,Use a public IP and Nat the 502 TCP port to internal IP address. But, what IP addres I have to put in coomunication settings dor slave devie? Private or Public of remote GSM RTU?

    Thanks.

    #4000
    Mikhail
    Mikhail
    Moderator

    Hi,

    IP address of a GSM device is specific to a telecommunication company. Sometimes they provide real IP for extra fee. This approach is not flexible. That’s better when a modem connects to a server.

    IP addres I have to put in coomunication settings dor slave devie?

    IP not needed if a modem initiates a connection.

    #4056

    rsepulve
    Participant

    Hi Mikhail,
    What should be the right configuration in communicator for Modbus TCP protocol?
    Thanks.

    #4058
    Mikhail
    Mikhail
    Moderator

    Hi,

    What should be the right configuration in communicator for Modbus TCP protocol?

    This question is too general. Many configurations are right. One of the possible examples is included in the default configuration.

    #4061

    rsepulve
    Participant

    Hi Mikhaeil,
    Sorry, I reffer to the communicator side looking to GSM RTU.
    for example I have 2 RTUs.
    One with Modbus RTU and other with Modbus TCP.
    You talk about if the RTU start communication, don´t matter the remote IP addres, how I have to configure the channel setting type tcp cliente, tcp master, in properties, master, Slave, connection individual, shared, etc.
    That is confused to me.
    I´ve put in GSM RTU, the public address and TCP port 502.
    In the router I´ve forwarded the 502 port to internal IP addres of Communicator and SCADA server.
    I´ve looked in the ethernet port that the data is coming to Server, but I confused to manage the response or polling from server to Remote GSM RTU, If I choose TCP, I need to put a remote IP address, wich, public GSM RTU or private GSM RTU, or what is the other config that doesn´t need the remote IP address?

    Thanks for your response and time.

    #4062
    Mikhail
    Mikhail
    Moderator

    Hi,

    Could you configure Communicator based on your intuition, then try the configuration? In case of issues, share screenshots with the settings and communication logs.

    how I have to configure the channel setting type tcp cliente, tcp master, in properties, master, Slave, connection individual, shared, etc.

    Try TCP slave first.

    #4063

    rsepulve
    Participant

    Thanks Mikhail,
    I’ll try.

    #4815

    waplet
    Participant

    Sorry for bringing up old post, but i currently have similar issue. Have you got it working?

    Do you have a device template for S272?

    #4816
    Mikhail
    Mikhail
    Moderator

    I suppose, you should provide links to screenshots of your settings and copy communication log here.

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