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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
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Can MODBUS TCP/IP devices share the same infrastructure with Ethernet/IP devices?
LCN slow down when connecting TPN server to Matrikon ODH with OPC optimizer on the App-Node
New Replies:
By Wassim Daoud on 20 November, 2009 - 12:39 pm -
I am very interested to know about your OPC Architecture. OPC Optimizer should help you reduce the...
We are fetching 15000 parameters per minute with our PHD system. We have 2 history modules, 3...
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 trying to built up communication of power meter pm-710 with egx-100.
New Replies:
By GENJUA on 20 November, 2009 - 3:10 am -
Mark, ya i try with end terminal resistor as well.
John Correa, know i am reading only 2...
By John Correa on 19 November, 2009 - 7:10 pm -
Only thing that can suggest (by now) is that you change the update rate of your MB_TCP driver. May...
By Mark on 19 November, 2009 - 5:03 pm -
Hello,
Jumping in the middle here and I might have missed something.
How about termination...
John Correa, sometimes i get the error which is NEGATIVE ACKNOWLDGE and sometimes the error is...
The EGX100 supports a total of 32 open TCP/IP connections at one time with the 2.7 firmware. It...
By John Correa on 18 November, 2009 - 4:28 pm -
Check the error message type in your EGX100. If the error message is TIMEOUT may be something wrong...
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:
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...
Hello Wim:
Our controllers have been used for many years now on many of the large telescopes...
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,...
Problems communicating with an INFI-90 system over fiber media converters using serial SemAPI w/ PI interface. Communications drop constantly, points take forever to load.
New Replies:
or try media converters by Omnitron Systems:
www.omnitron-systems.com
Email: info [at]...
Doc to configure the jumper of the hmi arcnet isa card
New Replies:
By KD on 18 November, 2009 - 10:44 am -
Here is a link to the SOHARD ISA ArcNet manual:
...
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 &...
communicate with a gsm modem connected to RS232 using matlab
New Replies:
At first you have to mention the communication protocol (Serial or parallel,or usb) between modem...
By milli on 16 November, 2009 - 12:26 am -
Let me explain the problem more clearly...
i am actually trying to get data from a oscilloscope...
Looking for local area pagers for maintenance technicians
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...
I have a problem when I want to read the modbus of SHARK 100, because I can't read 32-bit IEEE floating point format in VIJEO DESIGNER 5.0.
New Replies:
By Patrick Lansdorf on 17 November, 2009 - 4:14 am -
Hi guys,
If you cannot find a solution, I can recommend using a gateway. HMS has one that may...
> And, speaking of standards... I would sure love to see a date standard. What is 3/6/9? March...
There is an option for each device communications driver to change the double word order. If the FP...
Low cost power meter-data acquisition.
New Replies:
Raj,
I was not able to tell whether you need 3-phase or single-phase and whether this is for...
modbus communication distance maximum
New Replies:
By Darrin Hansen on 16 November, 2009 - 9:35 am -
Modbus itself specifies no distances, as it doesn't even specify any particular physical layer. ...
using a Liebert HPM need Modbus and Lonworks info
Problem with Beckhoff BC9000 + KL6021
Problem controlling drive remotely.
New Replies:
By Ken E on 12 November, 2009 - 2:40 pm -
I have not worked with this particular one, but I've used a 2HP TECO on my bridgeport at home. I'd...
time synchronization in DCS system
New Replies:
By M.Bhaskar on 12 November, 2009 - 7:36 am -
Hi,
please connect GPS to DCS directly through PPS or Ethernet in turn DCS will sync all other...
Hello all,
Thanks for all have taken care and explained for me.
And now we have another related...
Does EtherCAT have a standardized motion control protocol/interface to set parameters?
New Replies:
you can use EtherCAT slave controller IP core for ALtera or Xillinx FPGA.
That's most useful for...
from the Fustrated department...
Modbus between PLCDirect DL06 and Emerson Control Techniques Servo DrivesNeed help with hardware interface PLC Direct DL06 to Emerson Control Techniques EPP drive via Modbus DH485
information about devices Mayr with modbus communications
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