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Category Archives: Industrial Automation
Undocumented Secrets of Integrating BACnet MSTP
After too many hours of struggling though trial and error, packet sniffing, and lots of various materials found on the Internet, I have uncovered a few very important secrets that were not readily apparent in the official vendor documentation I had … Continue reading
Build Your Own Non-Linear Response
It is common to control the speed of a pump based on a sensor reading. But what if you want the pump speed to change at a different rate at different parts of the sensor range? If the response isn’t … Continue reading
Calculating the Volume of Irregular-Shaped Tanks
This is a quick demo and code listing I used to calculate the volume of a tank that is a combination of box, cylinder, and sphere shapes. The controller is a Red Lion G3 Graphite.
Stop Crimping RJ-45s
I am on a quest to convince people, especially controls and automation people, to stop crimping RJ-45 ends on Ethernet cables. Everyone else in the world terminates Ethernet to a punchdown block jack and then uses a pre-tested, pre-molded patch … Continue reading
Review of the YHS-302A Process Calibrator Meter With Multimeter
For about 1/4 the cost of a Fluke, I decided to take a risk and buy a Chinese process meter. This company makes a clone of the 787, but I opted for the YHS-302A model (which now seems to be … Continue reading
Posted in Industrial Automation, Technology
Tagged loop calibrator, multimeter, process meter, tool
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Data Type Comparison Chart
When I switch between different systems, I get confused about what size a certain data type represents , so I made this chart:
Wire Theft Detection System
Here is a pretty neat little project I just finished up that will detect if wire is stolen, and then send out email and text messages alerting a team of people of the event. It is in a remote area, … Continue reading
Posted in Industrial Automation
Tagged cellular router, modular controller, Red Lion, Sixnet, Sparky Geek, Video
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Time Average in Ladder Logic (ControlLogix AOI)
I’ve needed a time-average function several times, so I figure other people have also. Here is a handy AOI which makes it easy to use in a ControlLogix ladder program. (AB has the Moving Average MAVE instruction in function block and … Continue reading
Posted in Industrial Automation
Tagged Allen Bradley, AOI, automation, ControlLogix, controls, ladder, logic, PLC
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Using WonderWare Script to Check for Correct Number Format
Here is how I used a WonderWare window script to check to make sure the batch number entered by the operator meets the following requirements: must be 9 digits first digit is a 8 2nd and 3rd digit are the … Continue reading
