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Follow on Google News | Runtime Monitoring Using a dataTaker Data LoggerBy: CAS DataLoggers At CAS DataLoggers (https://www.dataloggerinc.com/) There can be many different causes of machine downtime. These causes of downtime include: Workstation starve – when there is no material or part available on which to operate Workstation block – when the output of the machine is blocked by the last finished part Failure or fault – when the machine has an active fault or failure Power outage – when there is no operating electric power, or pneumatic air or hydraulic pressure Personnel issue – no operator available If suitable sensors are available to determine which causes exists, this can also be logged. Configuring the dataTaker While most basic data loggers typically don't get into this level of functionality, there are many models of intelligent devices which can monitor runtime and more complex applications. For runtime monitoring, these data loggers and data acquisition systems feature one or more digital channels. To configure the dataTaker, users define CVs (Channel Variables) in the dataTaker's built-in dEX software. A channel variable is a memory location (or register) in the dataTaker's operating memory used for holding or manipulating data or state. Defining CVs enables users to automate data collection and control features. Using a dataTaker DT80 intelligent data logger (https://www.dataloggerinc.com/ Defining the Schedule Schedule 1 shows example data and code to add this functionality. It consists of: • Counter1_1State: • Counter 1_2State: Code = 1MODBUS("Machine1Move" • Counter1_1OnTime: • Counter1_2OnTime: Totalizing Run Time Our dataTaker has also been programmed to calculate and display Total Machine Run Time. Every night at midnight, the data logger generates runtime cycle totals and runtime totals for that day. This data is given as 'PreviousDay1_ Meanwhile the calculations are named Machine OnTime, OffTime, MoveTime and NoMoveTime. All are expressed in seconds. When it generates these daily totals, the dataTaker also resets all counters, having been programmed to do this so that it can count the new day's total from zero. The code to reset all these values is: • 2CV(W)=0 • 3CV(W)=0 • 12CV(W)=0 • 13CV(W)=0 For further information on runtime monitoring using dataTaker data acquisition systems (https://www.dataloggerinc.com/ End
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