Honeywell HC900 Application File Download
Honeywell HC900 "required device type DLL is missing or corrupted"
Virus Infection via serial Modbus
Posted by Rob Burghard on 2 June, 2018 - 4:35 am
Is it possible for an infected powermeter being the Modbus slave to infect its master via a serial connection?
By Rob Burghard on 10 June, 2018 - 1:19 pm
Thank you! The question is a very fundamental but real one: Can an infected Modbus slave infect...
By Fred Loveless on 6 June, 2018 - 10:57 am
It is possible but highly improbably that a virus could be passed up to the PC from the slave. The...
By Luca Gallina on 5 June, 2018 - 7:11 pm
trying to shed some light: 1. a Modbus Master polls for DATA. 2. the Modbus Slave (regardless...
By Rob Burghard on 2 June, 2018 - 5:33 pm
Thank you. Can we conclude then in general that it is impossible for a Modbus master to get a virus...
By Rob Burghard on 2 June, 2018 - 12:26 pm
Thank you. Perhaps my question wasn't clear. Let's say this powermeter has an infected OS. Can the...
Best PLC school in Toronto Canada??
Please let me know if you have been in any of the PLC teaching colleges in Toronto.
By Ryan MacKellar on 20 June, 2018 - 9:31 am
The PLC Technician online program from George Brown is a pretty good option. ...
Retrofitting/upgrading MARK IV control system with Siemens to gain MARK VIe benefits
Communication LED in MODBUS
Is Communication LED necessary in MODBUS?
By Bob Peterson on 14 June, 2018 - 10:44 pm
There is no requirement that it be there. Usually it means that there is some kind of valid modbus...
Square D SY/MAX 400 PLC Connection Problem
Unable to go online with Sy/Mate Plus software to download program
By Ryan on 13 June, 2018 - 3:57 pm
Came across this thread, currently working with a SyMax (have an XP laptop with WINMATE software). ...
TwinCAT 3 Error When Switched to Run Mode.
TwinCAT 3 error when switched to Run Mode.
By AdHe on 12 June, 2018 - 3:41 am
My Situation is exactly the same! (Just the error Code is 0x1016, but the message is exactly the...
By Joao on 22 May, 2018 - 12:42 pm
Same config here .bat file did not solve the problem as well. >The bat file did not help in...
Trouble downloading previous versions.
By Bob Peterson on 10 June, 2018 - 3:19 pm
You can have as many version of RSLogix 5000 loaded on your computer as you want. I bet there is a...
By Ikhtiander - on 10 June, 2018 - 2:16 pm
Hi McCaber, I try myself and was able to find any available version of RSLogix 5000 or Studio...
By James Ingraham on 10 June, 2018 - 11:13 am
I've had RSLogix / Studio 5000 for ages, so I'm not in the same scenario. I'm afraid you're going...
Protecting Thermal Valves in an Extinguishing System
Thermal protection for valves in an extinguishing system
High leg on 3 phase power
I have 3 phase power that has a high leg of 211 volts to ground. The other two legs are 120 volt to ground. Is it fine to run a three phase machine on this voltage?
By James williams on 7 June, 2018 - 6:48 pm
Well Said. Not to say that we all didnt have to learn from someone but this stuff is not a good...
Ingersoll Rand Inlet Valve Problems
Getting a "inlet valve rotated" error code on a 1990 SSr-Ep-75
Schneider Modicon M221 Coil Address
Problem writing to a single coil on a Schneider PLC using Libmodbus library
By Andrew on 5 June, 2018 - 7:20 am
Actually, M221 returns error ILLEGAL FUNCTION (code 1). That means PLC doesn't support function...
The generator owners have decided to upgrade our control systems and also go from one to two systems. Suggestions for a total plant solution?
on 4 June, 2018 - 6:07 pm
qhogan1 Good comments from CSA. I would also add on a few more things. Note: I am big advocate...
on 1 June, 2018 - 4:04 pm
qhogan1, Password protection is not closed architecture or black box. It's possible your site...
on 30 May, 2018 - 3:15 pm
qhogan1, This topic comes up rather frequently on control.com. I want to preface my remarks...
Make New Function Block in ABB Procontrol P 13-P14
Posted by amin.nzh on 3 June, 2018 - 9:43 am
How I can make new function block in Procontrol P13 ABB DCS system? Is it possible?
Atlas Copco Elektronikon Mk5 Communication
Looking for communications options to an Atlas Copco Elektronikon controller
Looking for general guidelines on Control Panel Layout
By Curt Wuollet on 26 May, 2018 - 12:31 am
From the variety I've seen, I don't think there are any rules. I think the formulas are...
SmartAir lite Modbus RS 485
How to interface (SmartAir lite) controller to DCS.
The top most used PLC systems around the world
Posted by Johan Bengtsson on 26 January, 2000 - 3:21 pm
We are going to greatly extend the number of different PLCs simulated in our educational software. What types and brands of PLC are most used in different parts of the world?
By Juan Beltran on 26 May, 2018 - 11:23 am
Hello, In Mexico te most Popular is AB, Siemens and Omron in that order, also i have worked with...
MODBUS Siemens CPU ET200SP
Modbus communication error
Can someone elaborate 3-point step control on Auto and Manual mode in general?
Shortly,what I need: 1) Some manual/datasheet for Simatic OPC Scout 2.3 2) Some program example in C/C++/C# to create database from OPC (DB's in PLC)
Modbus TCP Communication Issue
Help on establishing Modbus TCP connectivity
FX5 PLC Modbus RTU Slave Timeout Error
Keep getting slave timeout error on PLC. TX light on PLC flashes and RX light on slave flashes.
S7 indirect addressing question
Posted by Corne, Chris on 29 March, 2004 - 5:29 pm
I am trying to write a function that will take in a DB number, starting address, address offset, number of words, comparison value, and return a count of non true equal comparisons.
By OldBell on 20 May, 2018 - 12:15 am
Jasek, >Is the code for FB? - No. >What address or can address L W[AR1,p#0.0] and T...
By anonymous on 19 May, 2018 - 6:21 pm
Is the code for FB? - No. FC doesn't have internal addressing. Or we can't it see? What...
By OldBell on 19 May, 2018 - 1:12 pm
ps >What address or can address L W[AR1,p#0.0] and T D[AR2,p#0.0] or must be L...
By Oldbell on 19 May, 2018 - 1:30 am
Is the code for FB? FC dont have internal addressing. Or we can't it see? What adress or can...
Can Honeywell C200 controller address retrieve using any software ??