What is an APIPA or Local-Link Address?
An APIPA (Automatic Private IP Addressing) or Link-Local Address is a self-assigned IP address automatically generated by a device when it cannot obtain an IP address from a DHCP server
What are HMI-Info-Collector logs
When the HMI encounters software errors such as black screen, crash, and serverdisconnected…etc., the HMI information can be collected as diagnostic reportsand sent to Maple Systems for further analysis. Diagnostic Tool is supported in EasyBuilder Pro V6.xx.xx and later versions. Thistool can be found in the Download window Collecting HMI information must be carried out…
What is the WATCH feature
The WATCH feature allows the end-user to view the contents of a register-address in a message of an event. Users may set register-addresses from the PLC, Remote HMI, or Local HMI. The register-address will display the contents in the Events message. Each Event (Alarm) Log has the ability to have 8 WATCH addresses.
What is a Blanket Purchase Order?
Using a blanket purchase order is a common strategy for customers with ongoing projects. Often, an OEM solution has continuing needs for regular fulfillment of hardware, and the management of inventories and pricing are critical elements to the continuity of business. Maple Systems has the flexibility to help solve these concerns. While Maple Systems can…
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.…
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Recipe Database vs. Recipe Database Editor
When you create a recipe database in EBPro, the recipe data is actually stored in the EBPro project. You can view and edit the recipe data by opening the Recipe Database (under the Data/History menu) and clicking on the Data tab. If you make changes to the recipe database in the HMI, the changes are…
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 Log4j Vulnerability?
“Maple Systems HMIs are not affected by CVE-2021-44228, also known as Log4shell, and related vulnerabilities including CVE-2021-45046 and CVE-2021-45105. Users of Maple Systems HMIs do not have to take any further action.”
Background
Disclosed on December 9, 2021, CVE-2021-44228 is an Apache Log4j vulnerability which may allow remote code execution (RCE) on the target system by an attacker. Apache Log4j is a universally used logging system for Java-based web and server applications, and due to its widespread usage, many systems and applications may be affected by this vulnerability.
Displaying Pictures in the Picture View Object
The Picture View Object will automatically resize a picture to fit within its borders. There is an option for “Display with original size when a picture is smaller than the object size” on the Outline tab in the Picture View Object’s Properties: If the size of the picture is smaller than the Picture View Object,…
RW Memory is not saved after cycling power on the HMI
When making any changes to the RW memory area, the changes are stored in RAM memory initially and after 60 seconds, written to permanent flash memory. Therefore, when testing the RW memory, make sure you wait at least 60 seconds before cycling power on the HMI or the changes will not be saved permanently. Here…
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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…
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Maple Systems HMI File Extensions
The software for Maple Systems HMI’s has changed and improved over the years, as such the file types and extensions have changed along with it. Below is a list of file extensions associated with the relevant software and HMI model series: HMI5000 Series models: *.emtp file – Working EBPro and EZwarePlus project file *.ecmp file – Compressed…