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Control.com topic...
Networking
from the Forum department...
RJ45/Serial Connectors
Topic: Local and wide area networking in factory automation.
Posted by Hisham Najm on 30 October, 2009 - 2:13 am
serial connectors
Topic: Communications systems and equipment.
Originally posted by hlliu on 28 October, 2009 - 6:06 am
How to connect Wonderware to other SCADA system via OPC
New Replies:
I see ... considering that it's a proprietary SCADA, I am hesitant on giving you any advise in...
We have a system working similar to what you describe, but the "central" level as you put...
It is a property SCADA system can support UNIX, LINUX and Windows....
Both local and central can control the field equipment. Of course, between them a mechanism should...
What kind of Scada System are you planning on using on the Linux OS? Wassim Daoud Global...
Are you planning on using your central system for data collection and control or just data...
By Andrey Romanenko on 28 October, 2009 - 7:29 am -
First of all, it is good to hear Linux is advancing on the plant floor. Although you may...
Topic: Communications systems and equipment.
Originally posted by asaria on 25 October, 2009 - 12:01 pm
Any of you know how to minimize delay time in MODBUS RTU over RS-485 2-wire
New Replies:
I had checked it. From panel, I tried to read data from slave using Modbus simulator, i got only 2s...
RS485 (2 wire) is a half duplex communications path. Just like a 2 way radio one must KeyUp the...
What do you mean by KeyUp and KeyDown timing?...
I'd check to see if the slave has a "response delay", or similar setting. Also, since...
It is possible to get reply from logo in seconds if you can change/access modbus communication...
Seems you probably have a KeyUp/KeyDown timing issue. The most common problem is the slave responds...
from the Automation department...
IC200CPU001 modbus
Topic: Communications systems and equipment.
Posted by Dang quang Hung on 28 October, 2009 - 12:24 am
Modbus RTU master for versamax PLC
from the Forum department...
Communication between PIC and PC
Topic: Communications systems and equipment.
Originally posted by naveen on 22 October, 2009 - 11:16 pm
PIC and PC communication via USB
New Replies:
thanks bro.... i will try ...
You will need to program both the PC and the PIC to talk via USB. On the PIC end, Microchip...
from the Hi all department...
Time synchronization in DCS system
Topic: Communications systems and equipment.
Originally posted by jianjian2112 on 15 October, 2009 - 5:39 am
time synchronization in DCS system
New Replies:
Hi All, DCS system receive time synchronization in form of Pulse which can be defined for second...
The system clock for most systems nowadays are very unlikely to drift more than a seconds in a day....
I feel that it is firstly required to understand as to why the synchronization is required. ...
We are not very sure , but time synchronization plays very critical role in Multiple Node system we...
jianjian2112, the target of time synchronization in DCS from GPS that if we have more than one...
from the TAC Vista Network department...
Replacing TAC Xenta 302
Topic: PLCs and related questions.
Posted by jiminoo on 24 October, 2009 - 10:18 am
Need procedure for replacing a TAC Xenta 302 controller on a TAC Vista/LonWorks Network
Topic: Local and wide area networking in factory automation.
Originally posted by Babak on 28 September, 2007 - 11:28 pm
An IPC connected to a Siemens PLC as a slave module. When I restart the PLC while IPC running then PLC can't find the IPC hardware on the Profibus network.
New Replies:
We download new GSD of Siemens et200m and set FC3101, Beckhoff Profibus cards, baud rate at 1.5 M...
Topic: Communications systems and equipment.
Originally posted by Sven on 15 October, 2009 - 3:45 pm
how to multiplex RS485 slaves over single RS232 channel
New Replies:
>What exactly are you trying to do.. Hi Vance. Trying to do exactly what the two suggested...
Hi Patrick, Thanks for the reply. Your product too does what we needed, but as I just said in...
By Patrick Lansdorf on 16 October, 2009 - 3:10 am -
Hi, I think that there are a number of options that you have to choose from. I would use a...
What exactly are you trying to do.. For example.. Connect 3 slave (Remote) through modem to PC...
from the Forum department...
Share screens on differene computers
Topic: Local and wide area networking in factory automation.
Originally posted by Waqas ahmed on 18 October, 2009 - 11:05 am
Distribute control of DCS over different operators.
New Replies:
Dear friend, All the DCS presently available has the feature you are looking for. you can set...
from the Automation department...
DP/PA Coupler in Siemens H System
Topic: PLCs and related questions.
Posted by Kanag on 19 October, 2009 - 8:06 am
DP/PA Coupler in Siemens H System
Topic: Communications systems and equipment.
Originally posted by Steve on 18 October, 2009 - 12:30 pm
Water/Gas Meter with Modbus/LonTalk/BACnet Compatibility
New Replies:
Hello Steve, For your application, I recommend using a Sensus (or Sensus-compatible) water meter...
from the Forum department...
MODBUS and flow meter
Topic: Software, including programming, OS issues, etc.
Originally posted by zabee on 29 July, 2009 - 1:26 am
how a flow meter communicate
New Replies:
For your application, I recommend using a Sensus water meter and a Sensus gas meter, both of which...
from the DCS Interface department...
Ovation Serial Interface to Control Logix
Topic: PLCs and related questions.
Originally posted by Ann Roberts on 14 May, 2009 - 3:33 pm
Serial interface between Allen Bradley's Control Logix and Emerson Ovation DCS
New Replies:
Were you able to establish communication between the control logix plc and the ovation DCS? of so,...
from the GE energy (mark V) department...
ISA arcnet documentation
Topic: Human-Machine Interface and SCADA.
Posted by marco on 18 October, 2009 - 9:29 am
Doc to configure the jumper of the hmi arcnet isa card
from the GE energy Turbine HMI department...
arcnet network problem (Mark V)
Topic: Communications systems and equipment.
Posted by marco on 18 October, 2009 - 9:24 am
I have 3 Mark v units with 3 HMI (P2 +NT 4.0 +TCI 1.4 + cim 3.21) en the same arcnet network. one is crashed.
from the I love "open" networks department...
AB MicroLogix to Modbus Register 5xxxx
Topic: Communications systems and equipment.
Originally posted by Gary on 14 October, 2009 - 3:45 pm
Can MicroLogic PLC read Modbus Holding Registers in the 5xxxx range?
New Replies:
Thanks to Mark for the correction. It appears that old versions of the Modbus spec did make some...
Hello, What Mr. Griffin said is 99.99999% accurate. The current specification: MODBUS...
To make something clear about Modbus, this 0x, 1x, 3x, 4x, 4 digit, 5 digit stuff has *nothing* to...
The typical Modbus Address Scheme is : 0x = Digital Outputs (Bit)(Read / Write) 1x = Digital...
Try reading Register = 50102-40001 = 10101 = 0x2775...
from the networking department...
Server
Topic: Local and wide area networking in factory automation.
Posted by Ganges on 17 October, 2009 - 10:05 am
What is the difference between GPS & NTP in the time synchronization concept?
Topic: Power generation equipment control.
Originally posted by M Griffin on 11 October, 2009 - 11:18 pm
A computer virus caused serious problems recently for an Australian electric utility.
New Replies:
In reply to Matt Warshawsky: I don't want to flog this issue to death, but there are a couple of...
It was never my intention to simply pass the same traffic over serial, but instead to use a simple...
In reply to Matt Warshawsky: I don't think we need to go to the lengths of installing serial...
from the Instrumentation department...
Modbus on TCP
Topic: Communications systems and equipment.
Originally posted by Francisco on 15 October, 2009 - 7:32 am
Is it possible to use any RS232 to TCP converter or should I use a specific converter for Modbus?
New Replies:
I use a B&B ESP901 Single Port RS-232/422/485, as an example, and it can be used with any...
 
 
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