from the Thermal department...Connecting I/O cards between two PLCs
How to give the signal of one PLC to other PLC.
You Should use 230 VAC relay instead... DO of 2nd PLC will operate a relay whose contacts are...
from the WonderWare Upgrade Failures department...WonderWare Upgrade Issues
Upgraded PC. WonderWare updated from 7.1 to 2012 R2 (10.6).
>Background: > >. . . The PC has a PKTX card that communicates with a SLC-504 ? Still...
from the Software smithery department...EIPNET anybody used it?
This looks good but no examples.
from the Engineering department...N1OPC Server and ICONICS Genisis64
Looking for some help in Iconics Genesis64 with N1OPC drivers
By Brian E Boothe on 3 December, 2013 - 9:40 am -
No, it's Johnson Controls N1OPC....
By Fred Loveless on 8 November, 2013 - 11:49 am -
If you are referring to the National Instruments NIOPC Server then the reason you cannot get it to...
from the Pomp protocol department...Kienzle ER3/2 ER3 ER112 Protocol
Kienzle ER3/2 ER3 ER112 Protocol
from the Electrical Engineering department...DLMS Cosem to Modbus Protocol Converter
Looking for a DLMS Cosem to Modbus Converter.
Dear Dave, As mentioned before, SYNC 2000 are very widely used across the industry for DLMS to...
By Dave Leigh on 20 November, 2013 - 12:45 pm -
> We are looking for a DLMS Cosem to Modbus Converter. > The purpose is to establish a...
from the modbus tcp/ip department...Modbus tcp/ip with serial gateway response format
Response format for the modbus tcp/ip with serial gateway tsxetg100
Hi, has anyone used TSXETG100 for modbus tcp/ip? I tried different modbus response format with...
from the Software smithery department...Ethernet/IP and Python
Need some help on using Python to test Ethernet/IP implementation.
By Lynn August Linse on 26 November, 2013 - 11:30 am -
I have Python which talks to EIP for testing purposes, but it is not public. I work for digi.com,...
> You may download "pvbaddon.tar.gz" from > http://tinyurl.com/qckbsq9 This...
By pvbrowser on 24 November, 2013 - 12:34 pm -
You may download "pvbaddon.tar.gz" from http://tinyurl.com/qckbsq9 After unpacking...
from the Forum department...HART communication
HART multidrop limitation
By P. Mahesh on 26 November, 2013 - 1:29 am -
Thanks for your answer. I'm still confused abt one thing, if 62 devices can be connected as per...
The limitation is a HART 5 limitation, according to the HART Foundation's HART Communication...
from the Serial to Ethernet (S2E) department...Serial Server Connection to Ethernet Problem
I am having problems getting through my serial server to the device connected to its COM port.
from the Education department...BSR and Bit Shifting
Usage of a BSR and bit shifting
By Bob Peterson on 20 November, 2013 - 12:06 pm -
I agree these types of instructions are confusing. I avoid using them if at all possible. They...
from the EEE department...Profibus Connection issue
Profibus connection :: How to connect 3 Profibus RS 485 cables into one RS 485 socket.
What you need is a mux or what we call a serial server. Find one that is protocol independent or...
By Patrick Beckett on 18 November, 2013 - 7:30 am -
Within a single segment you can't have spurs in the way your describe but profibus allows for...
By Ikhtiander on 17 November, 2013 - 10:53 am -
Nick, Profibus in ring topology will fulfill you requirement but RS-485 would not be able to be...
from the Engineering HELP!!! department...EMI Interference!
Possible EMI interference issue.
from the Forum department...Agilent 34972A to Modbus?
I'm given the task to program a Modbus interface to Agilent 34972A DAQ using Delphi.
By CloverPark on 11 November, 2013 - 8:43 am -
Yes, I'll be using a modbus master to read the data from the 34972A. The 34972A will be connected...
Hi Paul, thank you. I'll check with my end user and get back on your question. You're right on...
If anyone wants to comment about using Delphi, please see my comments in this thread from several...
from the Hope can help department department...Snap7 1.1.0 released
New release of 32/64 bit S7 Ethernet Communication Library
from the Forum department...Modbus spec 32-bits register access
32-bits register access
By Lynn August Linse on 9 November, 2013 - 11:27 am -
Dave brings up a good point I'd overlooked - allowing a user to read 1/2 of a float a few msec...
Copying 16 bits at a time of a 32 bit value that may be changing can have unintended results. If...
By Lynn August Linse on 8 November, 2013 - 1:23 pm -
One sees both behaviors - for most PLC one can read 1/2 a float and never be any wiser. Other...
from the Forum department...Watlow F4 temperature control
Attempting to change the temperature of a temperature chamber through a Watlow F4 controller and a serial connection.
By HansSchulze on 6 November, 2013 - 2:27 pm -
from the Fire (in otherwords, I'm in dire need) department...Longitudinal Redundancy Check (LRC)
Need an example for calculating the LRC for ASCII modbus protocol.
By Jim McMurran on 5 November, 2013 - 8:10 pm -
There a couple of tricks, first LRC is calculated With raw data not the ASCII formatted data. ...
from the hmi department...Wiring a field device via dupline to a Profibus gateway
Project to have a field device wired via dupline to a profibus gateway (which acts as a slave). From the profibus gateway it gets converted to profibus and is read by two masters.
By Steve Myres on 4 November, 2013 - 10:15 pm -
MPI stands for Multi-Point Interface, which is a [primarily] Siemens protocol. It's not the same...
from the Sprecher department...Sprecon and Modbus
Problem in connection between a modbus device and Sprecher PLC series SPRECON E C 9.4
from the None department...SUCOMA protocol download?
Looking for a download site for SUCOMA protocol
from the Instrumentation department...Modbus Gateway software
Sofware based gateway to convert MODBUS TCP/IP SERVER (slave) to MODBUS RTU MASTRE (client)
By Lynn August Linse on 30 October, 2013 - 9:47 am -
I'd suggest NOT using a PC or software, as they are complex and won't just run for 10 years without...
from the Research & Development department...Connecting SolarEdge inverters using Modbus
Using the MODBUS protocol to communicate through RS485.
By Lynn August Linse on 30 October, 2013 - 9:41 am -
Nice to see SunSpec.org Modbus layouts spreading, and I know SolarEdge was one of the first to...
from the Forum department...Industrial communication and Protocol conversion
To know about industrial networking and protocol conversion
By Dick Caro on 28 October, 2013 - 10:01 am -
There is so much to be learned. Please start by reading some books on automation networking. You...
from the HELP !!!! department...Help on Cotas PLC
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.
By Junaid on 23 October, 2013 - 3:07 am -
thank you sir for your information, but here my concern is that if cotas cpu failed then where we...
The problem with people who have no vices is that generally you can be
pretty sure they're going to have some pretty annoying virtues.
-- Elizabeth Taylor