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How to setup ProcessLab for remote controllingvia a local corporate Ethernet (TCP/IP based)

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					                                                                                      No. 294e


Application Bulletin
Of interest   General analytical chemistry                                                   P1
to:




   How to setup ProcessLab for remote controlling
    via a local corporate Ethernet (TCP/IP based)

Summary
                       ProcessLab comes in a robust steel case which normally is placed in a production
                       environment. ProcessLab is easy to operate for semi-skilled workers but as any
                       analytical equipment it needs some maintenance.
                       Maintenance or changes can be done directly at the system. Remote access to
                       ProcessLab facilitates surveillance, changes can be done directly from any Windows
                       office PC. It`s easy to have a look on your running methods and there`s no more
                       time loss due to long walking distances.
                       In this instruction the well-known “Windows remote desktop” is used to install such
                       a connection. It is easy to operate and needs no additional software. And it is free
                       of charge!
                       Be aware that advanced technical software and hardware knowledge is necessary
                       to perform this installation.


Features/general information

                       •    Direct view of the ProcessLab display on your local office PC.
                       •    No time loss due to long walking or driving distances
                       •    Look and feel like sitting in front of ProcessLab
                       •    Easy to keep an eye on your running methods
                       •    Most of the Windows features work! (mouse wheel, PrintScreen, Drag&Drop,
                            ….)
                       •    Totally free of charge, included in every Windows XP/2000 pro!




Used equipment (minimum requirements for this task)

                       • Any kind of ProcessLab system with the integrated industrial PC which has 2
                         Ethernet connectors
                       • Internal corporate Ethernet network, TCP/IP based
                       • External office PC with Ethernet connection and Windows 2000/XP professional
                                      Application Bulletin                                    No. 294e
How to setup ProcessLab for remote control via local Ethernet (TCP/IP)                           Page 2




Warning!

                • As ProcessLab contains a normal Windows-based PC, all known difficulties and
                  problems can occur when connected to a network
                • Make sure you have a virus-free environment
                • Some networks require the opening of firewalls or installation of port forward-
                  ing. Please consult your IT department for further information
                • Many companies use intrusion detection systems which recognize remote desk-
                  top as an intrusion, please check this as well with your IT department
                • ProcessLab is a customer specific system. Please make sure that any additional
                  installed software does not interfere with the running system
                • Metrohm provides this information but does not take any responsibility nor give
                  any help or support on this!


Keywords

                Ethernet connection
                Ethernet is a common medium for transferring data between different worksta-
                tions. It is well known as corporate network, TCP/IP environment or internal net-
                work. ProcessLab industrial PC comes with 2 Ethernet connectors, one is used for
                the control of the I/O devices like pumps, emergency switch and so on. The other
                one is available and can be used to connect to a corresponding network. As there
                are many “tricks” please consult a technician if you do not have the required know-
                how. Don`t just try it out!

                Firewall and network policies
                Firewalls and network policies may prevent you from transferring the data needed
                for remote control over the network. But modern systems allow to open and for-
                ward ports to make a connection possible. Please also check the links at the end of
                this document for further tutorials.

                Network speed/stability
                The speed of an Ethernet-based network may vary widely. The slower your network
                the more difficult is a real time control of your ProcessLab system. It is recom-
                mended to use only connections of min. 10Mbit/sec. If your network is unstable it
                does not make sense to use this feature!
                Theoretically it is also possible to use telephone lines for data transfer. But this is a
                high security risk and transfer speed is very low. If you like to do this please check
                some commercial tools such as www.laplink.com, www.realvnc.com or
                www.symantec.com (PCAnywhere). There are many more commercial solutions
                available.

                Intrusion detection/protection
                As mentioned the data transfer between host (ProcessLab) and client (office PC) can
                be recognized as an intruder. Please inform or ask your IT department for further in-
                formation. They know how to setup these monitoring devices properly.

                Port
                                     Application Bulletin                                   No. 294e
How to setup ProcessLab for remote control via local Ethernet (TCP/IP)                         Page 3

                A port number is a port where a specific type of data is transmitted. Remote desk-
                top uses the port 3389. It can be changed if necessary to any port number (accord-
                ing to a firewall policy).




Setup of the ProcessLab IPC - host

                Step 1 – Network settings
                Open your ProcessLab and connect a normal network cable to the free Ethernet
                port. Use the cabling connector at the left or right side of ProcessLab to install your
                cable.
                Now, depending on your network, setup a fixed or a dynamic IP in Windows. If you
                do not know how to do this please ask your IT support.




                dynamic IP                              static IP

                Step 2 – Activating remote desktop
                The user account needs to have administration rights and a password (which is not
                initially set!). Otherwise access is blocked for security reasons. Go to “Control panel”
                and click “Performance and Maintenance”, then select “System”. Click on the re-
                mote tab and select “Allow users to connect remotely to this computer” check box,
                then confirm with ok again.




                “Allow users to connect remotely to this computer” is selected
                                     Application Bulletin                                No. 294e
How to setup ProcessLab for remote control via local Ethernet (TCP/IP)                     Page 4



                Step 3 – Configuring the Windows firewall
                Go again to the control panel and select “Security center”, select “Windows fire-
                wall” and make sure the box “Don`t allow exceptions” is not selected. Next click the
                exceptions tab and make sure that “Remote desktop” is selected. Confirm again
                with ok and ProcessLab is ready.




                “Don`t allow exceptions” not selected        “Remote Desktop” selected


Setup of the client PC (at the office) - client
                Step 1 – Starting Remote desktop
                Go to “Start”, “All programs” and then “Accessories”. Point here to “Communica-
                tions” and click “Remote desktop connection”. A new window appears.


                Step 2 – Log into your ProcessLab
                Enter the corresponding IP address or computer name you from your remote sys-
                tem. Hit the “Connect” button and if everything works fine you get the login screen
                of your ProcessLab IPC. Enter “ProcessLab” as user and the corresponding password
                and you should see the remote-screen on your local PC.




Links
                Setup instructions
                http://www.microsoft.com/windowsxp/using/mobility/getstarted/remoteintro.mspx
                FAQ
                http://www.microsoft.com/windowsxp/using/mobility/rdfaq.mspx
                Changing the port number
                http://support.microsoft.com/kb/306759/EN-US/

				
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Description: No. 294e Application Bulletin