Get some tips on using the groov RIO EMU with other Modbus TCP devices.
The Modbus protocol has been around since the late 1970’s. This is both amazing and cool. Amazing as some reading this have been using it since then (how time flies!). Cool because it's been around so long, and well established and widely used.
Opto 22 products have been supporting Modbus TCP since way-back-when. Out of the box, our devices are Modbus TCP slaves (now called "servers") and can be polled for data on specific register addresses. The groov RIO EMU (Energy Monitoring Unit), one of our newest products, is no different.
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Topics:
Energy management,
Modbus,
groov RIO,
OptoForum,
power monitoring,
groov rio emu
groov EPIC becomes a Modbus master/client with a few easy lessons.
With Modbus continuing to be a popular protocol for industrial devices, the chances are pretty good you will need to write a program to communicate with Modbus slave/server devices more than a few times. The groov EPIC controller offers several Modbus communication options, and CODESYS, an IEC 61131-3 compliant development environment, is one of them.
With your PLC programming experience and the Using groov EPIC as a Modbus Master in CODESYS course on OptoU, creating a CODESYS project with Modbus master functions will be a breeze.
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Topics:
Training,
Modbus,
CODESYS,
groov EPIC,
OptoU
Watch these new groov EPIC videos for tips on using your Modbus TCP devices with groov View, PAC Control, Node-RED, and Inductive Automation's Ignition software.
Opto 22 engineer Ben Orchard is back in the Opto 22 studio with several new video lessons on communicating to Modbus TCP devices with a groov EPIC processor.
For each lesson, Ben is using a groov EPIC Learning Center (GRV-EPIC-LC) along with a Modbus SATEC P130 power meter, which is measuring the voltage and frequency of the mains power in our studio.
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Topics:
Modbus,
PAC Control,
Node-RED,
groov View,
groov EPIC,
groov EPIC Learning Center,
Ignition
As an applications engineer, sometimes known as OptoMary on our OptoForums, perhaps I shouldn’t have favorite customers. They’re all my favorites!
Sure, our products and people have helped build flashy Vegas shows, huge amusement parks, and various NASA endeavors that we may or may not be allowed to discuss in detail. We also have the less flashy water/wastewater installations and beloved "dam customers" that can be pretty Coulee, too.
In these Adventures of an Applications Engineer posts I'll share some of my favorite favorites.
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Topics:
Deepsea Challenge,
PACs,
I/O,
PAC Project,
Modbus
OptoForum member tohox recently posted a question about using PID control loops on a SNAP-PAC-R1 rack-mounted controller.
The issue? A really long dead loop time.
"The time delta between the moment the strategy opens a given loop's valve [and] starts the pump+furnace and the moment a temperature increase is measured can sometimes be on the order of an hour," tohox notes.
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Topics:
Energy management,
Tips,
optonews,
PACs,
I/O,
Building management,
Modbus,
PID loop control,
OptoNews 2016-09-28
Getting Useful Data from Big Data
At the San Diego Supercomputer Center (SDSC), researchers analyze mountains of data from widely differing fields, including:
- Supersonic aircraft
- The human brain
- Distant stars
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Topics:
Energy management,
Case studies,
optonews,
PACs,
Integrators,
Building management,
Modbus,
OptoNews 2016-07-06
How do you get a variety of building systems and machinery to communicate with a central system controller, when they use different protocols?
Swedish system integrator Processcomponent AB had to solve this problem when they installed an energy monitoring system in a large apartment building in Gothenburg.
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Topics:
Energy management,
Case studies,
Remote monitoring,
optonews,
Integrators,
Building management,
Modbus,
OptoNews 2015-11-18,
M-Bus
Whether your Modbus equipment uses Serial RTU, Serial ASCII, or Modbus/TCP protocol, our latest Modbus Integration Kit has you covered.
The kit makes it easier to integrate your Modbus equipment with SNAP PAC controllers running PAC Control strategies.
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Topics:
optonews,
PACs,
New products,
Integrators,
PAC Project,
OptoNews 2015-10-07,
Modbus
