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Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
"I was gratified to be able to answer promptly, and I did. I said I
didn't know."
-- Mark Twain
didn't know."
-- Mark Twain
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need help making the logic to perform the calculations to exchange 4-20mA into a pulse output
New Replies:
By Roy Matson on 20 November, 2009 - 3:18 pm -
"I am using a flow meter to measure the GPM and that sends a pulse signal to a converter that...
Can MODBUS TCP/IP devices share the same infrastructure with Ethernet/IP devices?
Searching some Modbus sniffer software. freeware if available.
New Replies:
By Harvard on 20 November, 2009 - 9:53 am -
I have a free WIN32 Console application that diode auctioneers two Async data streams into one...
We are re-implementing the motion control of an astronomical telescope, and need to include complex calculations (in C code) into the position loop.
New Replies:
By Steinhoff on 20 November, 2009 - 4:25 am -
> [clip]
> 3) on a PC: i.e. implement everything with a PC and linux compatible hardware....
By Steinhoff on 20 November, 2009 - 4:14 am -
> ==> Automation List post by M Griffin...
> [ clip ]
> I don't want to give the...
By curt wuollet on 20 November, 2009 - 12:03 am -
Sounds like a switch to a better supported card would get you going and preserve the work you've...
Thank you very much for spending your time and efforts... your views are most interesting, and very...
By M Griffin on 19 November, 2009 - 2:23 pm -
For each axis you will have a servo motor and drive. The motor will have its own encoder which will...
Hi,
Thank you very much for all the answers.
It is true that telescopes are mainly controlled...
By M Griffin on 18 November, 2009 - 6:33 pm -
The first thing I would do would be to ask the other observatories how they are running this...
By curt wuollet on 18 November, 2009 - 3:37 pm -
> Bill Sturm, Once again, it's much easier to do PLC functions on a <
I don't know how...
By Ken E on 18 November, 2009 - 1:08 pm -
Depending on the time involved and the performance requirements with regards to positioning,...
Hello Wim:
Our controllers have been used for many years now on many of the large telescopes...
By curt wuollet on 18 November, 2009 - 10:26 am -
Moderator's Note: post corrected to remove name at beginning of post.
Once...
By William Sturm on 18 November, 2009 - 10:13 am -
This sounds like a good application for a Delta Tau PMAC controller. The processing speed and...
By Steinhoff on 18 November, 2009 - 8:30 am -
Hello,
We have customers which are using PLCs from Siemens together with QNX PCs for running...
By Ken E on 18 November, 2009 - 8:26 am -
Some of your details are a bit vague, but it sounds like you want to skip the PLC and go with a...
using function code 01 for reading Booleans and from slave side address given 40010 what will our starting address?
Missing Diagnostic alarm from MKV Panel
New Replies:
Yes there is more than one unit being installed. The other one has the same prom set, but as the...
So, there is more than one unit being installed?
If so, what are the PROM revision numbers for...
At the moment they are quite in the dark also. I hope that before the end of the other...
If you're commissioning a new unit with a Mark V, what does GE say?
...
I tried verifying all this things. the only thing that comes to mind is the same that I've got at...
Then it would seem there is something amiss with the installation of TCI, CIMBRIDGE, or CIMPLICITY....
Yes sorry for not mentioning it. but I've already checked the Cimplicity alarm screen setup and it...
Now here's an interesting post. Someone who's concerned about the lack of...
Would like to setup a alt71 to comm. with our plc quantum with a noe77111 card.
New Replies:
Hi,
yes it is modicon cpu, with unity software. After a bit more reading i am able to send...
What type of device are you going to use to control the Altivar 71 Drive? If it is a Modicon PLC,...
What do you use PLC or DCS to control wind turbines?
frequent trouble alarm in Det-Tronics system with Eagle Quantum Premier controller and LON network
How to determine update rate of GES driver to talk to RX3i.
New Replies:
By John Correa on 18 November, 2009 - 4:38 pm -
The update rate depends on your OPC Server options but for sure it will never have better...
Please contact FieldServer at 408.964.4446 for the OPCFieldServer solution. The FS-B-OPC Server...
Machine which we are going to do with Rotart shear cutter for cutting metal sheets from 800 mm to 5000 mm
New Replies:
I agree that the rotary cutter should not have to stop between cuts. With a decent controller you...
your customer is correct you should be able to develop a profile for constant motion... you...
Need to connect Micrologix 1100 PLC to Agilent 34980A.
New Replies:
By Harvard on 18 November, 2009 - 11:21 am -
Am I missing something? What does the IEEE 488.1 and 488.2 standard have to do with RS485? The MM...
By Brian Beal on 18 November, 2009 - 5:53 am -
I am not sure if the Micrologix can do ASCII serial, but if it can then you should be able to use...
Can only read 6 registers from Controlotron 1010 flow meter via Modbus
New Replies:
By Paco on 18 November, 2009 - 10:46 am -
If you are using a Prosoft Module for Modbus Communication from a PLC and you are getting a Command...
How to print tag nos. and descriptions of historised points in TDC 3000
New Replies:
To find out parameter names (specifically for UCN nodes/UCN node specific conf/tags built on NIM)...
How to check scan time of DCS & PLC
New Replies:
By SPR on 18 November, 2009 - 2:03 am -
For other questions:
3. CONTROLLER LOADING: PLC controller loading is with respect to your...
By SPR on 18 November, 2009 - 1:41 am -
SCAN period in PLC and DCS are fundamentally different.
PLC: it is the time taken to scan &...
Modbus and acyclic time
New Replies:
Some of the functionalities are located on the field, in particular the diagnostic functions. I...
By M Griffin on 16 November, 2009 - 9:16 pm -
Modbus is strictly a communications protocol. The DCS, PLC, or other controller determines how and...
Hoist motor vibrates while drive and motor is taking high current and it vibrates though brake was open but motor is not running
New Replies:
By Roy Matson on 16 November, 2009 - 6:35 pm -
It sounds like single phasing, check each phase with a clip on ammeter.
If it's not that could be...
need help with Gen32 to be used with Unitronics UniOPC Server
New Replies:
Hi Paul,
I have used Genesis32 with Unitronics PLC's before. The Unitronics OPC server does not...
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