How to comply with CFR 211 (FDA 21 CFR Part 11) when using a Maple Systems HMI

FDA 21 CFR Part 11, by Food and Drug Administration (FDA) of the US government, definesthe criteria under which electronic records and electronic signatures can be treated withsame degree of validity as paper-based records. Since the scope of FDA’s regulatoryauthority is very broad, Part 11 has an impact on all computer systems in life scienceindustry.…

Floating Point Rounding Errors

Generally, “floating point error” refers to when a number cannot be stored in the IEEE floating point representation. Integers are stored with the right-most bit being 1, and each bit to the left being double that (2,4,8,…). It’s easy to see that this can store any integer up to 2^n, where n is the number…

What is Grade 304 Stainless Steel?

Grade 304 stainless steel is generally regarded as the most common austenitic stainless steel. It contains high nickel content that is typically between 8 and 10.5 percent by weight and a high amount of chromium at approximately 18 to 20 percent by weight. Other major alloying elements include manganese, silicon, and carbon. The remainder of…

What is meaning of the different IP Ratings your products offer? (IP65, IP66, IP67, IP69K)

IP69K – This rating indicates the device is built to withstand extensive wash downs with corrosion resistance against cleaning agents, especially against close-range high-pressure, high-temperature washdowns. The level of protection allows for easy cleaning and sterilization using water with temperatures of up to 80°C and pressure of up to 30 Bar. IP67 – This rating indicates the…

What is the difference between a compiled project and a compressed project in EBPro?

An EBPro project file is saved with a *.emtp extension (*.cmtp for CMT Series). This is the development project that can be opened and edited in EBPro. Before you can download a project to an HMI, the project must be compiled. The compiler creates a new file with a *.exob (*.cxob for CMT Series). This…

How to Set the RTC in an HMC

There is a STARTUP demo project for the HMC models in the MAPware-7000/Projects folder (C:MapleSystemsMAPware-7000Projects) that can be used to set the Real-Time Clock (RTC) in the HMC. Open the “HMCxxxxA-M STARTUP.mpl” demo project for your particular model and download it to the HMC. Tap the startup screen to go to the next screen, then…

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