Automation & Control

Discussion group for all topics related to automation, control, data acquisition, and remote monitoring. Includes technologies like PLCs, PACs, HMI software, control software, I/O systems, and networking.

Members: 156
Latest Activity: Nov 7, 2013

Discussion Forum

Does your company do electrical PMs? How often?

Started by Donald Fitchett. Last reply by Donald Fitchett Jan 13, 2011. 4 Replies

PLC to read data file from PC

Started by Michael Galenkamp. Last reply by Donald Fitchett Jan 12, 2011. 1 Reply

Opto 22 Blog

Simulate digital input

Hi! I am currently working on a project, and i have access to limited hardware. I have got Pac sim and Pac disply working togehter. But i...

Any recommendations for LED scrolling signs?

Hi OptoFans, Do any of you have an LED scrolling sign (or similar) you like and perhaps have programmed via a PAC? We've done a few different...

Controller Time

Dear Sir SUB: control engine time is not accurate, while i synchronised with proper time, after few days the control engine time is...

heartbeat timer

Hi All, There's been some discussion on timers, but I need more specific info. All of our controllers (LCM4's and PAC S1's) have heartbeat_timer...

SNAP PACK R2 as Modbus TCP/IP salve

Hi support team We are using Snap pack R2 Controller with 32 channel Analog Inputs. I want to use Snap pack R2 controller as Modbus TCP/IP slave....

Toggle a Bit

Anyone have any ideas on toggling a bit from Groov. I can use a Command Button to set a 1 or 0, using a Button I can turn on a bit and then turn it...

PID Input: Square Root

Hi Optoers, I have a quick question regarding PID inputs. I hope the answer is obvious, and possibly indicative of my poor internet-search and...

Can Groov Collect Data and Write to a Comma Delimited Text File?

Hello, I am interested in purchasing Groov and besides using all the real time features, I was wondering if it could be used to also collect time...

PAC Control 9.1 variables only being set in 'step mode'

Hello all, I was wondering if there are any known cases out there of Pac Control only being able to set variables (i.e. set variable ABC to TRUE...

Comment Wall


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Comment by Maria Chipman on August 5, 2011 at 8:30am
Belden Inc is a manufacturer of universal joints and drive shaft assemblies. In general, does anyone come across these in their line of work?
Comment by Donald Fitchett on July 6, 2011 at 8:15pm
That Opto 22 Blog is great. Glad I found it.

Peer-to-Peer - how do YOU do it? post cool too. I wonder if termonolgy changed with the PAC, or remote I/O was just overlooked as a possible solution?

Comment by ahmad reza atef on June 28, 2011 at 1:51pm
i am Msc Mechatronic student with mechanical engineer background anyone could suggest me a MSC project .
Comment by Melinda Monaco on September 20, 2010 at 6:12am
PTC's Jim Heppelmann in the Boston Globe's Hot Seat >>
Comment by Steven Fage on September 15, 2010 at 6:13am
Does anyone know of an automation/controls engineering position open in the Tampa Bay area? Please msg me. I have just relocated to the area to attend USF for graduate studies. Looking for full time work. Thank you.
Comment by Kevin D. Dawson on September 14, 2010 at 5:43am
I've been using different types of sensors and systems for system integration and safety systems such as prox sensors and light curtains, Sink/Source, Ladder Logic and Fuzzy Logic for almost 20 years. I feel that there is still a lot that I have missed in other applications by sticking with a known/familiar few. But, unfortunately, that is the human nature.
Comment by Donald Fitchett on March 3, 2010 at 2:02pm
Great, thanks again.
Comment by Jim Lutzo on March 3, 2010 at 11:14am
1756-ENBT should work just fine. I used the EN2T as an example but any of the EtherNet control modules will work.
Comment by Donald Fitchett on March 3, 2010 at 10:52am
Thanks Jim: I thought it was that simple, but wanted to do a little research via social network first. I did find when connecting just one laptop to ControlLogix, you can't have your computer set to auto default assign IP, you have to type in a manual IP address for your laptop. took me a while to figure out. So I was trying to see if there was any other little idiosyncrasies' I need to know beforehand. Also we have the 1756 - ENBT, that will work ok wont it?
Comment by Jim Lutzo on March 3, 2010 at 7:42am

Any of the EtherNet versions of the ControlLogix communication modules should work for this application. The module (e.g. 1756-EN2T) would be installed in the same chassis as the controller, and connected with a standard ethernet cable to one of the router's ports. You would then connect from any laptop to the 1756-EN2T by whatever IP address you give it, over the chassis backplane to the slot where the controller resides.

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