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Communications
Posted by Jayesh Trivedi on 28 October, 2013 - 7:47 am
To know about industrial networking and protocol conversion
Topic: Communications systems and equipment.
from the Buildiong Automation department...
Integrating Honeywell EBI & Honeywell XL5000 series
Posted by Karim S on 27 October, 2013 - 6:47 am
We need to communicate and read realtime data from and existing Honeywell BMS EBI based on XL5000 series. Using OPC Server?
Originally posted by Genjua on 6 October, 2013 - 10:15 am
I was going through some newly launched Schneider product.
it says maximum number of TCP Server Devices are 100 and Maximum Number of TCP Gateways are 32.
New Replies:
Modbus TCP/IP is a Client Server Protocol. If you have a Modbus RTU background the Client is like...
Topic: Software, including programming, OS issues, etc.
from the embedded department...
Modbus TCPIP Slave program problem
Originally posted by amar on 25 October, 2013 - 2:56 am
vb6 based mod-bus implementation not able to receive response from server after second request.
New Replies:
Hello, Try Modbus VB6 project from www.modbus.pl Regards, Andrzej ...
Posted by Ejaz on 25 October, 2013 - 12:35 am
want to see Simatic interfacing window or setting that is being loaded to modbus
Topic: Communications systems and equipment.
from the Modbus is so simple department...
M340 BMX P34 2020 modbus TCP with Phoenix-contact Bus coupler
Posted by kino on 23 October, 2013 - 4:00 am
WRITE_VAR function under modbus TCP is not working properly
Topic: PLCs and related questions.
from the HELP !!!! department...
Help on Cotas PLC
Originally posted by Joe on 20 July, 2011 - 9:44 am
I work for a wind turbine company and it would be nice to be able to look at least the i/o ports on a cotas PLC.
New Replies:
thank you sir for your information, but here my concern is that if cotas cpu failed then where we...
Topic: Communications systems and equipment.
from the Test department...
Twido Modbus
Originally posted by jalahezc on 13 May, 2012 - 10:57 pm
TwidoSwite, having problem reading multiple registers, I am only able to read four registers regarding of the number I input.
New Replies:
> TwidoSwite, having problem reading multiple registers, I am only able to read four registers ...
Topic: Software, including programming, OS issues, etc.
from the Help!! department...
DSE 5510 communication
Originally posted by Sborja on 18 October, 2013 - 7:58 pm
How to change the number of a DSE5510 slave
New Replies:
I think that the only way to change the Modbus slave ID is to connect with a P810 connector and use...
Posted by Sajjad Idrees on 21 October, 2013 - 12:33 pm
I am trying to configure vfd (MM3) through cb15 to cp342-5 and having a cpu 314IFM.
Topic: Communications systems and equipment.
from the Hotels department...
Modbus RFID readers
Originally posted by mhilberts on 19 October, 2012 - 5:08 am
Looking for mifare ultra lite RFID reader that does Modbus.
New Replies:
Hi, When you communicate with Saia PCD controller, the protocol doesn't necessarily have to be...
Originally posted by BigTom209 on 19 October, 2013 - 7:06 pm
Trying to find someone who may have has experience with setting up Modbus with SEL equipment
New Replies:
I know that this is going to sound strange to you BUT to ask for Modicon Modbus Register 40001 you...
Topic: Information resources, documentation.
from the Looking for a rude camera. department...
Camera for corn field machine
Originally posted by Carlos Melendrez on 16 October, 2013 - 1:49 pm
Looking for a camera that is waterproof and uses ActiveX
New Replies:
Mobotix makes a nice weatherproof camera line. http://www.mobotix.com...
the cameras for suv's for backing up and forward looking are readily available and affordable ...
Topic: PLCs and related questions.
from the IT department...
Memory leak in Honeywell OPC server
Posted by Bikshapathi on 19 October, 2013 - 4:57 am
While communicating with PCO as opc client and Getting memory leak issue while communicating between opc DA source system and pco.

Topic: Sensor technologies.
from the Forum department...
CRC-CCITT to CRC16 Modbus implementation
Originally posted by JotaTR on 15 October, 2013 - 7:21 am
Problems writing code for CRC-CCITT to CRC16 Modbus implementation
New Replies:
Well, I think you mixed up two variants. Harvards C code doesn't use a LUT. His code calculates...
By lynn August Linse on 17 October, 2013 - 6:15 pm -
Here is my Python CRC16 code (I have the same table as you). Again, I know little about PHP, but I...
Thanks for the fast answers. I have tried to translate the c code to php and run it but i didnt get...
Hello, >NOTE: For Modbus the SEED = 0xffff, for >other protocols the SEED = 0x0. It...
This is the code I use. NOTE: For Modbus the SEED = 0xffff, for other protocols the SEED =...
By Lynn August Linse on 15 October, 2013 - 9:13 am -
I don't think the CRC algorithm you use is valid - I don't understand the XOR to find offset....
> I am having a lot of trouble on generating a modbus CRC16 code using PHP. There is some...
Topic: Engineering and workplace issues.
from the Instrumentation department...
Chiller unit control
Originally posted by Ahmed on 23 September, 2013 - 7:16 am
Connection between chiller unit and DCS?
New Replies:
Depends upon the interface card installed in the Chiller unit....
Topic: Communications systems and equipment.
from the Water Treatment department...
Ge Fanuc PLC communication with Rockwell SCADA
Originally posted by arun on 10 October, 2013 - 6:39 am
How to communicate GE Fanuc PLC with Factory Talk View SE SCADA
New Replies:
Thanks. Let me check the possibility...
Thank you. Let me check the possibility...
You might also consider our Omnii-Comm product http://www.miille.com/din266-p00.pdf for this...
You could also use a gateway, such as a Modbus RTU slave-to-EtherNet/IP slave: ...
There is an OPC Server built in to Proficy Machine Edition (the development sw used to program the...
Kepware....
Topic: Communications systems and equipment.
from the automation department...
Alpha Omega TEC controller series 800
Originally posted by Judy B on 9 October, 2013 - 2:10 pm
Need help programming the Alpha Omega TEC controller series 800 using RS-232 (Modbus protocol)
New Replies:
Thank you for your replies. I was able to communicate with the device this morning when I used a...
Software and RS-232 in today's world means using a USB/RS-232 converter, unless you're using an...
>have you considered contacting the manufacturer's tech support line? Yes I have contacted...
Topic: PLCs and related questions.
from the pkc department...
Telemechanique PLC TWLCAA24DFR
Posted by ra on 15 October, 2013 - 11:21 pm
Communicating with Telemechanique plc using Modbus over RS232
Originally posted by Dean Schneider on 15 October, 2013 - 1:30 pm
CRC errors when attempting to read MODBUS data from the Gas micro
New Replies:
If this is via an RS485 link there may be a timing issue. Such as, the slave keying down its...
Topic: Local and wide area networking in factory automation.
from the Forum department...
determining RS485 pins on a connector
Originally posted by uptownlord on 14 October, 2013 - 5:16 pm
How to determine D+ and D- of a rs485 port
New Replies:
By Lynn August Linse on 15 October, 2013 - 9:08 am -
I would add, you might require a 5th signal-ground wire. True '2-only' or 4-only' wire RS-485...
By Lynn August Linse on 15 October, 2013 - 8:39 am -
Unfortunately there is no absolute way to know, plus different vendors select + or - for different...
Topic: Communications systems and equipment.
from the Instrumentation department...
Monitoring A Modbus RTU Network
Originally posted by J on 13 October, 2013 - 8:25 am
Are two modbus masters on a network is possible without taking the network down
New Replies:
How are you planning to figure out if one slave is actually working correctly? Why do you suspect...
I saw a industrial sniffer on a tank farm several weeks ago that showed the tank level at the...
Thanks Mark and Harvard...
The PC based monitor (sniffer) is NOT a ModBus Master, it just captures the Master and Slave...
Hello, > Can both masters be set to address 0? No. Address zero (0) is reserved for...
Posted by yudo on 11 October, 2013 - 6:20 am
How to integrate Masterlogic 200R with Advatech Adam 6017 through peer-to-peer Modbus TCP?
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