from the Forum department...Help with InStep eDNA
Looking for engineers who have experience with InStep eDNA
from the Forum department...1747 -sn remote i/o used on profibus network
1747-SN remote i/o scanner on a profibus dp network
from the Instrumentation department...Interface b/w Modbus Master to Ethernet Slave PLC
I am facing problem to interface GE make Mark-VIe controller with Honeywell DCS (TDC 3000) through Hiway Gateway (HG). For this interfacing we use Ethernet to RS232 converter.
By Suraj Iype on 1 September, 2012 - 12:52 pm -
We had serious trouble establishing the link between Mark VIe and Yokogawa Centum VP DCS over...
from the MVI46-MCM department...drive control, Modbus RTU using MVI46-MCM & SLC 5/04
I have 3 different VFD brands I would like to control using Modbus RTU. I have a Prosoft MVI46-MCM card in a SLC 5/04 rack.
By Steve Myres on 31 August, 2012 - 12:59 pm -
By Jim on 29 August, 2012 - 4:50 pm -
> I have some pretty good SLC code for operating that card that I should be > able to find. ...
By Steve Myres on 28 August, 2012 - 10:56 pm -
I have some pretty good SLC code for operating that card that I should be able to find. Post your...
from the Development department...jamod and modbus
Generating a list of devices connected and the list of parameters of every device
from the Control system department...NAMUR - Maximum distance
NAMUR - Maximum distance and signal amplifier
It depends on how much resistance is being driven at the receiving end, but typically milliamp...
By sun on 30 August, 2012 - 6:00 am -
Hi can body address my above question? thanks in advance. sun...
from the Forum department...How to connect Magelis XBTGT6330 to Modbus Plus Network
Is there need for accessories like modules or adapters to connect the Magelis XBTGT6330 HMI to Modbus Plus network or it can be connected directly to the Modbus Plus network without using extra hardware?
By Brian C. on 30 August, 2012 - 9:11 am -
USB cable Magelis to MBPlus Adapter. Modbus Plus network is all 3 wire cable. Depending upon...
Thanks Brian C, Do you know the pinout of the cable that I should use to connect the XBTZGUMP...
By Brian C on 28 August, 2012 - 8:53 am -
Purchase the "plug and play" XBTZGUMP, USB Modbus Plus Communication Adapter from...
Hi, Yes, you will need a converter such as: ...
from the C&A department...Modbus Mapping Info
Looking for Modbus Mapping Raw Data range on a PCC 3100 Cummins Control panel & Diesel generator using FT10 Networks where my client can convert the analog / digital inputs into operator readable format.
from the Automation department...1756-ENBT Communication issues
Communication issues with 1756-ENBT/A and SLC 5/05 and Micrologix processors
By Steve Myres on 24 August, 2012 - 10:32 am -
Sounds as if there's some issue with the ENBT or the rack (yes, I've had racks cause problems...
from the TRICONEX PLC department...NCM 4329
NCM 4329 COMMUNICATION
By Bruno on 21 August, 2012 - 4:35 am -
Hi, >Is it possible to get a converter like >BNC to ethernet? the Ethernet (802.3)...
from the Forum department...Failure Modes of Yokogawa's Mulcom
Help identifying possible Failure modes of Mulcom
from the tail between my legs department...Using FactoryTalk and Kepware to drive a PLC contact
I have two tags in my Kepserver both monitoring PLC contacts. I have been trying to use the FactoryTalk even log to input a logic statement that will force on one of the contacts if the other is turned on.
from the DAMAC department...BUS CS275 REDUNDANT NO SHOWING A BUS
we have a bus CS275 redundant(A y B) and one bus(A) no is in software BANY and no have alarms of the BUS, only the alarm when the fault was present
from the Forum department...Simulate HMI to PLC communication
How to simulate scada communication?
By ryj on 10 August, 2012 - 3:21 am -
Hi friends I need to know about the hmi modbus communicate to 24f microcontroller modbus libery...
from the PROCESS department...twido abd w@de
Communication between twido plc and w@de 315 rtu
from the Control department...Interfacing with MODBUS protocol using PC
Using interface device which communicates on Modbus protocol only. Want to communicate with simulator on PC.
By pvbrowser on 9 August, 2012 - 2:24 am -
Here you find our Modbus class
By Mark on 8 August, 2012 - 12:24 pm -
For basic interaction between your master and a slave running on a PC, you don't need to develop...
By Steve Myres on 7 August, 2012 - 1:06 pm -
The direction of information flow is irrelevant in the master/slave concept; the designation has to...
If your device has a table of registers, like 40001 or 30012 with a description of what is in the...
By David on 7 August, 2012 - 8:46 am -
What determines modbus master or slave? How? Please help...
By Tallak Tveide on 7 August, 2012 - 2:14 am -
if you are using modbus tcp then modbus-cli is free and may be sufficient for your needs:...
By Steve Myres on 6 August, 2012 - 7:00 pm -
Go to www.Modsoft.co.uk. They have Modbus master and slave utilities for Windows for 5 pounds each...
from the inst department...Atlas copco combox-s problem
How to check if atlas copco combox-s is working or not?
from the Forum department...Master Data access using Nmodbus
data access from modbus slave is blocking
By Mark on 6 August, 2012 - 6:27 pm -
Hello, Sorry to disagree, my advisement is not 'moot' and it does not apply only to TCP to RTU...
By Lynn August Linse on 6 August, 2012 - 1:57 pm -
> Are you using libmodbus or your own implementation of Modbus It is our own proprietary...
By Mark on 5 August, 2012 - 10:54 pm -
Hello, > So if you have 20 remotes, use 20 threads and 20 sockets... Be advised, on...
By Manish on 5 August, 2012 - 9:58 pm -
Thanks Lynn, Are you using libmodbus or your own implementation of Modbus Regards, Manish ...
By Lynn August Linse on 1 August, 2012 - 10:21 am -
I have *NOT* used nmodbus, however all of my 'master' or 'bridge' code uses 1 thread (or task) per...
from the Forum department...Interfacing an ArchestrA Galaxy to Instep eDNA Historian
Interfacing an ArchestrA Galaxy to Instep eDNA Historian
from the automatization department...Communicating between MODBUS RTU and WAGO
problems with communication between Wago and Seneca
By Bruno on 5 August, 2012 - 8:55 am -
Thank You, What is meaning of that error?...
By Bruno on 5 August, 2012 - 6:09 am -
Thank You for helping. I think that I made all above and still I don't get signals from ZSG. Can be...
By Ivan Popov on 5 August, 2012 - 2:18 am -
The error is MB_ILLEGAL_NUMBER_OF_POINTS. You can check this from the /library manager/data types...
I have no idea what error code 5 is, but here's a list of things that can go wrong with serial...
from the serious department...ModbusRTU Master Over TCP/IP Interface in Java
I'm developing a ModbusRTU Master Over TCP/IP Interface to read a ModbusRTU electricity meters data. the meters are working over RS485 network.
You can try xMasterSlave for Modbus protocol at www.tgscada.com. It is a completely freeware....
By Lynn August Linse on 1 August, 2012 - 10:16 am -
> the packet screenshot of the software over a virtual "com" viewed from wireshark: ...
The ip address of the converter is 192.168.0.190. If i test from the modbus poll (trial) over a...
"Speed is subsittute fo accurancy."