from the Gas Turbine Control department...Rustronic Mk2 Information
Looking for information on Rustronic Mk2 GT controllers
from the Master Thesis world department...Master Thesis Guidance With Protocols
Trying to decide which communication protocol is better for the API I am designing for my Master Thesis.
By JOhn Bryan on 30 September, 2014 - 10:31 am -
The security/cost of MODBUS is exceptionally inviting for most applications. It is a...
By Lynn August Linse on 29 September, 2014 - 10:29 am -
You could also look through the California Smart Grid initiatives, as they are trying to define...
Thank you all for your responses. I am strongly considering Modbus, because DNP3 seems to be...
By John Correa on 26 September, 2014 - 7:23 pm -
Hi. You must pay attention in the security (cryptography) issues. A large scale data network...
By Harvard on 26 September, 2014 - 12:28 pm -
I can only speak for the last 35 years (20 with the Fisher ROC series) and it has been Modbus all...
By Lynn August Linse on 26 September, 2014 - 10:10 am -
Wow, that's a tall order. Which is better? :-) Really it depends on your market. Modbus is great...
from the Solar department...Modbus Training Courses
Looking for Modbus training courses
By BMK on 29 September, 2014 - 10:27 am -
Texas Automation Systems which partners with Techstar gives great instruction on Modbus. ...
from the Engineering department...Connectivity and Controller Tags for VB.NET 2012 OPC RSLinx
Setting up connectivity for VB.NET 2012 OPC. How do I list the TAGs in my controller?
from the Forum department...MODBUS Break Condition & Checksum
MODBUS RTU using RS485 to RS232 converter connected to RS232 to USB converter to communicate with electric meter using MODBUS Poll.
By CA Connect on 28 September, 2014 - 6:32 pm -
I agree that the fewer converters you have transferring the signal, the better. Connecting one...
from the Engineering design department...RS485 Connnection to DV-6 VE4006P2
Connecting DCS to VFDs on 485 Modbus RTU
Modbus is not plug-and-play even if Emerson's laughable marketing spiel, "Plug your Serial...
from the General Engineering department...DCS vs PLC
Advantages of DCS over PLC for Gas turbine control
By FT on 26 September, 2014 - 2:53 pm -
I am in agreement and as a proponent of Allen Bradley systems, the difference is in the planning....
from the Forum department...Contactless Card Reader and PLC
How to connect contactless card reader to PLC?
from the Forum department...Power Meter Destroys Modbus RTU Bus Communication?
Problem with SCADA system that supervises electrical power flow for a residential building. Connected with Modbus RTU over RS485 daisy-chained 2-wire. The communication on the bus seems to be destroyed with Schneider PM750 connected.
Thank you for your kind and relevant responses. I've been approaching the problem with biasing...
I've seen similar problems a few times before -- where one device brings down the RS485 bus. One...
> By the way,, does it exist any utility to check the serial interface of the Pm75? I'm thinking...
By Lynn August Linse on 18 September, 2014 - 4:08 pm -
If you expect lightning/grounding damage, what I have done a few times is power everything off...
I've been researching this problem today and tried both biasing of the bus, different common/shield...
This link shows the shield connection to the PM750: ...
> Where are the terminating resistors and what value? Resistors are placed at the cable ends,...
> It is most likely a grounding issue - that the 2 vendors approached the 'reference signal to...
By Harvard on 15 September, 2014 - 11:45 am -
Two points: 1. RS485, technically speaking, is a 3 wire system, A, B and COMMON. But the...
Some notes: > They are interconnected through daisy-chain 2-wire RS485 The shield and...
By Lynn August Linse on 15 September, 2014 - 9:51 am -
It is most likely a grounding issue - that the 2 vendors approached the 'reference signal to...
from the Forum department...Mark-VI Communication with ABB DCS Over OPC
OPC Communication between Mark-VI and ABB Freelance AC800F fails resulting in hanging of all ABB Operator Stations.
Ali, Mark VI systems are no longer provided by GE; Mark VIe systems are now the standard. This...
from the Forum department...Synchronizing Two ABB DCS Controllers
One type of status reading of ABB DCS says they are Synchronized, but other says they are 35% in Synchronized.
from the Software department...Using MODBUS in Visual Basic 6
Visual Basic 6 sp 6
Ethernet Communication Port 502
Visual Basic 6 sp 6
Ethernet Communication Port 502
By china taiwan on 20 September, 2014 - 6:04 am -
my name is James Lin ...... my email " email@example.com " ...
from the R & D department...Enable Register Read in LabView
When reading registers in MODBUS using LabViewm, how do I read data from registers at addresses 43XXX?
from the Modbus department...Non-Isolated and Isolated Modbus Slaves on Bus
Bus contains isolated and non-isolated slaves. Considerations when connecting everything together?
from the networking department...Information regarding tag in Control logix over Ethernet/IP
Are controller tag details for control logix is available on ethernet/IP? Using 1756-EN2T module in controller chassis for communication.
from the ModbusTCP department...PROSOFT MVI56-MNET Slave Response Time
PROSOFT MVI56-MNET communication response time and performance
By Bob Peterson on 17 September, 2014 - 5:19 pm -
Hint - prosoft has very good tech support....
from the Forum department...RSLinx issue in VMWare WIn 7 32 bit VM
I can do a serial upload and download but I cannot go online with RSLogix 500 inside a VM running WIn 7 32 bit
I just got the 2 port version and it works like a champ. Upload, download and online. Thanks! ...
Years ago I had trouble with VMWare and a Keyspan USB to serial device. I switched over to a Gearmo...
from the Communication department...Communication Between Control Logix and Centum VP Using Ethernet/IP
Communication not getting established between Yokogawa (ALE-111) and Control logix using Ethernet/IP.
from the seeking product recommendations department...Modbus TCP temperature monitor
I'm looking for a product recommendation
By SG on 17 September, 2014 - 6:39 am -
See there... http://pcsensor.com/index.php?_a=product&product_id=109 Moderator's...
I am looking for much the same thing, a simple temp and humidity for my server room. I just want...
from the Gas Detector, Engineering department...Using a sigmatel USB IrDa dongle to communicate a Drager Xam 2000 with CC Vision software
How to use a sigmatel USB IrDa dongle to communicate a Drager Xam 2000 with its CC Vision software for calibration
Search the forums there should be similar problem but solved. Did you update all the necessary...
By Xpresi on 15 September, 2014 - 3:51 am -
Hi. I have the same problem with a sigmatel usb-irda dongle and windows XP. Do you get to solve...
from the opc department...Communication between Triconex PLC and Matrikon OPC Server Using TCM Module
Issue with Communication between Triconex PLC for SOE and Matrikon OPC server using TCM Module
from the Electrical Engineering department...Communicate ER300P energy meter with PLC
How do I enter programming mode and communicate ER300P meter with PLC SIEMENS 200?
By Ummachan on 13 September, 2014 - 3:03 pm -
I communicated the meter with PLC. Changed the Meter ID using PLC program. The Values or the...
from the Forum department...TDC 3000 Remote Station Hanging
Remote Honeywell ES-T hangs with the RPS kit. Is it possible to extend the LCN using fiber without using obsolete Honeywell equipment?
from the Power Generation department...Getting a better understanding of GT control PART 3
Getting a better understanding of GT control PART 3
By kath746 on 10 September, 2014 - 8:39 pm -
I agree! Thanks for very informative discussion here. Anyway if you are looking for different types...
from the Modbus RTU Slave Simulation department...Modbus RTU 2 slaves simulator
How to simulate two Modbus RTU Slaves
ModMultiSim (see http://wingpath.co.uk/modbus/modmultisim.php) can simultaneously simulate two (or...
from the Specification department...Redundancy of Byte Count and Quantity
Is there a need for both fields "Byte Count" _and_ "Quantity"?
By Mark on 9 September, 2014 - 10:40 am -
Hello, There are several possibilities. Quantity would normally be the count of data fields...
She missed an invaluable opportunity to give him a look that you could
have poured on a waffle ...