Control.com topic...
Communications
Topic: Communications systems and equipment.
from the RS-485 department...
Modbus ASCII RS-485
Originally posted by Vinod Gavande on 29 July, 2009 - 1:32 am
How many slave devices cab be multidroped on RS-485 bus?
New Replies:
Hi, For RS485, its 1 + 31. Ramu...
Topic: Communications systems and equipment.
from the Forum department...
Broadcast on Modbus TCP
Originally posted by Ilan on 28 July, 2009 - 2:36 am
How do I handle Modbus broadcast requests on TCP when I convert it from a serial bus?
New Replies:
Modbus/TCP uses TCP/IP to deliver the messages. Therefore, broadcast is a TCP/IP feature, not a...
TCP is a a connected state. In order to communicate to a Device that is using TCP you have to...
Topic: Human-Machine Interface and SCADA.
from the Forum department...
Register mapping of variable length data
Originally posted by Sebastian Seidel on 15 July, 2009 - 7:49 pm
How to map variable length data to holding registers?
New Replies:
It's always good to hear feedback. The feedback helps other people who are following the discussion...
Now, that took me some time! But I have defined the registers (and am very glad that's finally...
I will start off by saying that what would probably help a lot is to sit down and imagine yourself...
By Sebastian Seidel on 18 July, 2009 - 4:41 pm -
Thank you very much for the swift and in-depth response, without which I would most certainly have...
You said that you're not sure about "the max data length of many variables". They're 32...
Originally posted by Moataz Sherif on 19 February, 2009 - 8:02 am
Hi, I wanna interface an ABB dcs system including AC450 and MP200/1 with another type of DCS systems
New Replies:
With over 500 unix OS500s in inventory..... When it comes to masterpiece and ac450 controllers, we...
Topic: Power generation equipment control.
from the Forum department...
Mark V - missing IO card
Originally posted by Jarek on 24 July, 2009 - 4:12 am
Mark V - DCC errors, missing IO card
New Replies:
Good bit of troubleshooting finding that by re-booting the TCDAs (which is what it's believed you...
Topic: Communications systems and equipment.
from the Electronics department...
Microcontroller serial communication
Originally posted by n roy on 24 July, 2009 - 12:30 am
how does 8051 microcontroller do serial communication
New Replies:
Hi, There are basically 2 registers in the SFR map called SCON & SBUF. What ever u write to...
Topic: Communications systems and equipment.
from the Software department...
SINEC H1 to Ethernet (RJ45)
Originally posted by Asif on 24 July, 2009 - 5:52 am
Converting SINEC H1 Cable connection and to Ethernet.
New Replies:
By Tony R. Gunderman on 24 July, 2009 - 8:52 am -
Depending on where you want to do the conversion, an AUI to Ethernet 10-BaseT transceiver may be...
Topic: Communications systems and equipment.
from the Forum department...
Digi One IAP Communication
Originally posted by FelMed on 23 July, 2009 - 2:52 pm
Communication DigiOne IAP with Flexlogix and PC.
New Replies:
By Jeremy Pollard on 23 July, 2009 - 9:32 pm -
The device should have come with a CD. if not you can download the config software from digi.com ...
Topic: Programming languages.
from the forum department...
Read weight from an rs232 scale
Posted by Mostaza on 23 July, 2009 - 5:08 pm
Problem reading weight using an rs232 serial port on a pc using VS2005 C#.
Originally posted by James on 28 May, 2009 - 11:53 am
Modbus Connection AB CompactLogix - Mitsubishi A2ACPUcomm
New Replies:
Yes, we want to use compactlogix as a master then Mitsubishi A2ACPU as a slave. Do you mean that we...
Topic: PLCs and related questions.
from the Forum department...
DF1 Driver for Linux
Originally posted by Robert Herrmann on 22 July, 2009 - 10:51 am
I am looking for a DF1 driver for Linux
New Replies:
Try the following: http://sourceforge.net/projects/libpccc/ It's source, so the processor...
Topic: Continuous process industries, DCS questions.
from the LED display board department...
LED display board
Originally posted by Govind on 26 June, 2009 - 2:10 pm
Temperature Display variation
New Replies:
yes,check the controller. http://www.ledtop168.com maybe there some engineer can help....
Topic: Communications systems and equipment.
from the Engr department...
Modbus 2 Bacnet Convertor
Originally posted by Leonardo on 4 August, 2003 - 6:32 pm
I need Modbus converters
New Replies:
By Yogesh Deshmukh on 22 July, 2009 - 7:33 am -
Aftek have come up with BM series protocol converters to bridge the gap between devices which...
Topic: Communications systems and equipment.
from the System Engineering department...
Modbus RTU via TCP
Originally posted by Salman on 20 May, 2009 - 9:03 am
Is it possible to convert Modbus via TCP into Modbus TCP?
New Replies:
Hello, I know a device which is exactly designed for your requirement, so from-to Modbus RTU...
Topic: Communications systems and equipment.
from the Forum department...
Modbus RTU Master in Program Master mode
Originally posted by Frankan on 16 July, 2009 - 4:10 pm
Need a Modbus RTU Master OPC Server as "Program Master"
New Replies:
Do you have the info how to setup those "Progam Master" paths on MB Plus? Sounds to me...
"Program Master" and "Data Master" are Modbus-Plus terms. Modbus-Plus supports...
Posted by Prasanthi on 20 July, 2009 - 11:12 pm
Protocol Converter from MODBUS RTU to proprietary protocol(HAI Omni-Link II protocol) on TCPIP
Topic: Communications systems and equipment.
from the Automation List department...
Problems setting up FMS comm. with CIF50
Originally posted by Ron on 30 January, 2007 - 11:45 pm
New CIF50 isn't able to set up a succesful link with the PLC.
New Replies:
Did you or someone els solved this problem? I have the same issue. Thanks Eric...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Moxa Configuration
Posted by Edgar on 20 July, 2009 - 1:10 am
Configuring moxa unit uc7420 with that of a areva m243 using dnp3 protocol
Topic: PLCs and related questions.
from the Forum department...
communication with slc 5/4
Posted by Soma Bay on 18 July, 2009 - 10:39 am
no communication between my pc and slc 5/4
Topic: PLCs and related questions.
from the Forum department...
1747-cp3 pinout diagram
Posted by Soma Bay on 18 July, 2009 - 1:06 am
Allen Bradley RS-232 (1747-cp3)pinout diagram needed
Topic: Engineering and workplace issues.
from the Instrumentation Kiddie department...
Single DP Xtr for 10:1 Turndown?
Originally posted by Dasa on 16 July, 2009 - 2:28 pm
In era of modern DP smart transmitters do we still need 2 transmitters for 10:1 turndown?
New Replies:
I would say yes provided you are reading the DP from the transmitter with HART of Fieldbus so that...
Topic: PLCs and related questions.
from the Current DH+ interface info. department...
Programming & Diagnostics to DH+ from newer PC
Originally posted by Lost in the Dark Ages on 6 June, 2009 - 1:25 pm
Talking to DH+ with a modern computer and old DOS software
New Replies:
1) I believe you mean ISA, not ide. 2)There is not going to be a solution for $500. List price...
Check out the DataLink Ethernet/IP Gateway to DH+ Solution. Although it costs $1,500 (more than...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Satchwell Sigma Interrogation
Originally posted by Rav Panchalingam on 10 July, 2009 - 12:54 am
In need of a software (or hardware) solution to read data out of a Sigma system on demand.
New Replies:
So far as I can tell, there are just two ways. They sell some integration boxes which have...
By Rav Panchalingam on 16 July, 2009 - 12:13 am -
Hi thanks, I may need to clarify my question. I don't need any help to read BACnet, in fact I've...
There are BACNET libraries on Sourceforge. I suggest that you try one of those. Since you'll have...
Topic: Communications systems and equipment.
from the Automation List department...
xbtz925 cable diagram
Originally posted by Anonymous on 27 May, 2007 - 5:33 pm
seeking cable diagram for xbtz925
New Replies:
Good luck(for all:)) Side 1(Panel) Side 2(TSXCUSB485) 3--------------------1--- ...
Topic: Communications systems and equipment.
from the Automation department...
DCS Shutdown signals
Originally posted by khanna on 30 June, 2009 - 5:37 am
Shutdown logic signal between two DCS systems
New Replies:
Thanks Nick, Actually (I must apologize)the communication required is between two independent...
Topic: Communications systems and equipment.
from the Communication department...
Yokogawa Centum CS 3000 & 3500/92 Communication
Originally posted by Vibcone on 12 July, 2009 - 4:03 am
Error in reading Analog Data from Holding registers
New Replies:
Parity adds a bit to check whether or not a serial word (byte) passes the test of having an even or...
1. Parity is redundant with CRC checking, so you might disable parity else you may limit full...
Originally posted by Brian on 9 July, 2009 - 8:16 pm
looking for a setup guide or some app notes
New Replies:
What SLC500 module are you using??? The 3150-MCM module has 2 DB-9 ports ont he front of the...
Topic: Communications systems and equipment.
from the Forum department...
Wayne Dresser Current Loop protocol
Originally posted by Sax on 19 April, 2009 - 4:25 am
Dresser Wayne Protocol for Current Loop
New Replies:
I am need Wayne Protocol, email me please. deniss [at] bas.lv ...

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