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Would like to setup a alt71 to comm. with our plc quantum with a noe77111 card.
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What type of device are you going to use to control the Altivar 71 Drive? If it is a Modicon PLC,...
We are trying to built up communication of power meter pm-710 with egx-100.
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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.
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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...
Doc to configure the jumper of the hmi arcnet isa card
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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
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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
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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
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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.
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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.
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Raj,
I was not able to tell whether you need 3-phase or single-phase and whether this is for...
modbus communication distance maximum
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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
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Thank you for the link...
By Simon Hedges on 11 November, 2009 - 4:54 am -
You could try posting this question on the TwinCAT Developers forum on LinkedIn...
Problem controlling drive remotely.
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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
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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?
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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
Problem transferring Binary data over the GPRS Network while communicating to a modbus rtu
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Telnet is designed for 7-bit ASCII.
It doesn't allow raw 8-bit binary data - various bytes (such...
By RKay on 9 November, 2009 - 12:57 pm -
Hello again,
> Modbus RTU can be sensitive to timing "gaps" in the message. <
...
By M Griffin on 8 November, 2009 - 12:56 pm -
Modbus RTU can be sensitive to timing "gaps" in the message. It could be the GSM modem is...
data mapping between SCADA and OSI-PI System
Reading Modbus registers using SNMP Protocol
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By Wassim Daoud on 9 November, 2009 - 11:43 am -
Have you considered using OPC for this?
let me know
Wassim Daoud
Global solutions architect
...
By Gustavo A. Valero P. on 8 November, 2009 - 9:13 pm -
Hi,
What you need is a device called "gateway" which translates your Modbus data to...
By Ammar on 7 November, 2009 - 3:33 pm -
Salam GEN,
you can read modbus device register by making a low level program using Visual Basic...
Does TwinCAT have Function Blocks for TCP/IP?
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By 3PV on 8 November, 2009 - 11:42 am -
yes. Direct access to TCP/IP Stack is available for TwinCAT. It's called the "TwinCAT...
Addressing Problem with Modbus/TCP
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By M Griffin on 6 November, 2009 - 3:36 pm -
To add to my previous reply, "coils" are read-write and are normally used as outputs....
By M Griffin on 6 November, 2009 - 3:30 pm -
According to page 7 of your document, for n=64 the coil address are:
9577-9584 On/Off setting
...
By ParagonIndore on 6 November, 2009 - 12:22 am -
Thank You for your reply.
I know the address is preassigned. That's what i am asking what will...
Value of Modbus address assignment table
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By M Griffin on 5 November, 2009 - 12:48 pm -
The first digit is not the address. It is a code to indicate the address type (coil, discrete...
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