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Storage Space Insufficient message pops up on HMI screen

If the “Storage Space Insufficient” message pops up on the HMI screen (Window number 8 in EBPro), it is likely caused by not having a USB flash drive or SD card connected to the HMI when the Event/Alarm log or the Data Sampling Object is configured to save data to one of these memory devices.…

How to clear HMI memory

When using a Maple Systems HMI, the project, recipe (RW, RW_A, db), data log, event log, and operation log files are stored in permanent HMI (flash) memory. There are several ways to clear data in flash memory.  1. Open Utility Manager, select the HMI series being configured in the upper-left corner, click [Publish] and then…

Can I change what address an object is referencing at runtime?

Yes. You can dynamically change the address referenced by an object using the index feature.  This allows you to create and indirect pointer or offset into PLC or HMI memory. In the object properties window click on the address settings button then check the Index register checkbox and select the index to use: When you…

Trend data on a HMC in MAPware7000

There are two options for trending data in MAPware7000. Both of these objects can be found in the “Advanced Objects” menu. Real Time Trend:  The Real Time Trend is used to display a trend graph that represents up to four tag registers. The graph polls the registers on a timed basis and displays the values as plots…

How to initialize data on my PLC from the HMI at power on?

There are several ways to accomplish this. To set a few registers or bits you can place Set Bit or Set Word objects on the common window (window #4). These objects have an option for Set On when window opens: Because the common window is always visible objects placed on this screen will be triggered…

Wiring a passive 2-wire analog output device

4 to 20 mA sensors generally come in two types: Passive or 2 wire sensors are generally simpler devices that act as variable resistors where the resistance is proportional to the value being measured. Examples are pressure sensors, linear position sensors or potentiometers for user input. These devices are called passive because they do not…

How to sample multiple channels with an Allen-Bradley CompactLogix PLC

For PLCs with fixed addressing like the Allen-Bradley MicroLogix Series, data must be stored in consecutive registers in order to sample multiple data points and store the data in a single datalog file so that multiple channels can be displayed in a Trend Display or History Data Display. For tag-based PLCs like the CompactLogix, create…

What is the PLC Control Object?

The PLC Control object in EBPro is a feature in the software that can execute commands when it is triggered by a PLC bit or word. Click [Object] » [PLC Control] icon on the toolbar to open the PLC Control Object management dialog box. To add a PLC Control object, click [New], set up the…

What Maple Systems products support Microsoft® SQL?

Microsoft® SQL Server can be used with our High Performance series to help collect and display data for easier monitoring and analytics. The High Performance series also support a built-in database query viewer which enables production machines to retrieve data from your central SQL database. By connecting a High Performance HMI product to an SQL…