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John Ruck

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Latest activity by John Ruck
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    John Ruck created an article,

    Obtaining the magic NumThreads setting for a LOWIS server process

    LOWIS Server processes operate in a shared thread processing model, where there is only one "active" thread at a time while the other threads might be in a suspended state waiting for a r...

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    John Ruck commented,

    EPCAC is the designation for the Matrikon OPC server for Scada CAC support.  I am not sure why the designation for it is EPCAC, that designation was in use before I started working on the OPC support.

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    John Ruck created an article,

    OPC Manager Debug Levels

    In this article you will find a list of the flags that can be configured in the DbgLevel configuration setting in OPC Manager and when they might be of use.  Keep in mind that all of these flags en...

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    John Ruck created an article,

    8500 Protocol Scan Task OPC Configuration Settings

    This article identifies the configuration settings values available for instances of the 8500 Protocol (mbkrscan) scan tasks when they need to use OPC to acquire the data. See LOWIS Configuration f...

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    John Ruck created an article,

    AESCAN Scan Task OPC Configuration Settings

    This article identifies the configuration settings values available for instances of the AESCAN scan tasks when they need to use OPC to acquire the data. See LOWIS Configuration for OPC Accessed De...

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    John Ruck created an article,

    MODBUS Scan Task OPC Configuration Settings

    This article identifies the configuration settings values available for instances of the Modbus scan tasks when they need to use OPC to acquire the data.  See LOWIS Configuration for OPC Accessed D...

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    John Ruck created an article,

    LOWIS Configuration for OPC Accessed Devices

    Configuring LOWIS to communicate with devices using OPC requires a series of configuration settings that have to be coordinated together for communications to actually succeed.  These settings are ...

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    John Ruck created an article,

    OPC Communications using the OPC Manager (mopccldr.exe)

    For background information see LOWIS Server Architecture Overview In LOWIS, the mopccldr.exe program (referred to as OPC Manager) is responsible for communications to devices that use an OPC Server...

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    John Ruck created an article,

    TCP/IP Communications (mipscan.exe)

    For background information see LOWIS Server Architecture Overview. In LOWIS, the mipscan.exe program is used to communicate with devices that are reachable via a TCP/IP address/port identification....

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    John Ruck created an article,

    Radio Communications (Mscan.exe)

    For background information see LOWIS Server Architecture Overview In LOWIS, the mscan.exe program is used to communicate with devices that are connected via radios, where the radio transmitter is d...